**Description :** If r is the radius of a circle and d is its diameter is an equivalent formula for the circumference C 2r?

**Last Answer :** Circumference of a circle: 2*pi*radius or diameter*pi

**Description :** If r is the radius of a circle and d is its diameter is an equivalent formula for the circumference C 2r?

**Last Answer :** Circumference of a circle: 2*pi*radius or diameter*pi

**Description :** What is radius and diameter if the circumference is 78.8?

**Last Answer :** circumference = π diameter→ diameter = circumference π = 78.8 π = 25.0828... ≈ 25.1unitsdiameter = 2 radius→ circumference = π 2 radius→ radius = circumference π 2 = 78. ... errors. It was the re-entry of rounded data to a computerprogram that lead to the start of chaos theory.

**Description :** What is the radius of the circle/ I.Ratio of its area to circumference is >7. II.Diameter of the circle is ≤ 32. If the question can be answered with the help of statement I alone, If ... the statements. If the data in either statement I or statement II alone is sufficient to answer the question.

**Last Answer :** Let the radius of the circle be r units From statement 1: [πr^2]/ [ 2 πr ] > 7 or r > 14 From statement II: 2r≤32 R ≤ 16 Hence, r can be 15 or 16 units Hence, Answer : d

**Description :** The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

**Last Answer :** Let r be the radius, then OQ = OB = r and OR = (r - 4) ∴ OQ2 = OR2 + RO2 ⇒ r2 = 64 + (r-4)2 ⇒ r2 = 64 + r2 + 16 - 8r ⇒ 8r = 80 ⇒ r = 10 cm

**Description :** The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

**Last Answer :** Let r be the radius, then OQ = OB = r and OR = (r - 4) ∴ OQ2 = OR2 + RO2 ⇒ r2 = 64 + (r-4)2 ⇒ r2 = 64 + r2 + 16 - 8r ⇒ 8r = 80 ⇒ r = 10 cm

**Description :** A glass sphere of radius 15 cm has a small bubble 6 cm from its centre. The bubble is viewed along a diameter of the sphere from the side on which it

**Last Answer :** A glass sphere of radius 15 cm has a small bubble 6 cm from its centre. The bubble is viewed along a ... be if the refractive index of glass is 1.5 ?

**Description :** find the circumference of a circle 5ft radius?

**Last Answer :** 20

**Description :** A battery is connected between two points `A and B` on the circumference of a uniform conducting ring of radius `r` and resistance `R` . One of the ar

**Last Answer :** A battery is connected between two points `A and B` on the circumference of a uniform conducting ring of ... @)` D. zero for all values of `theta`

**Description :** How do you get radius if you have circumference?

**Last Answer :** Circumference = 2 x pi x radiusDivide the circumference by 2pi

**Description :** If the radius of the circle above is 30 mm. What is the circumference of the circle (Use 3.14.)?

**Last Answer :** 188.40 mm

**Description :** What is the radius of the circle if circumference is 132cm?

**Last Answer :** Radius of circle: 132/2pi = 21cm to the nearest integer

**Description :** What are The radius of Circumference 188.4 feet?

**Last Answer :** Radius of circle: 188.4/2*pi = 30 feet rounded to the nearestwhole number

**Description :** What is the circumference of a circle with a radius of 67.5 meters?

**Last Answer :** The circumference of a circle it Pi times the diameter. Thediameter is 2 times the radius. So the diameter is 135 and Pi is3.1416. So the circumference is 424.115 metres.

**Description :** What is the approximate circumference of a circle with 17.4 cm radius?

**Last Answer :** Circumference of circle: 2*pi*17.4 = 109 cm approximately

**Description :** Speed of an object travelling around a circle depends upon A. angular velocity B. radius C. circumference D. both A and B

**Last Answer :** both A and B

**Description :** Age of a tree may be ascertained by (A) Radius of its stem (B) Circumference of its stem (C) Number of branches (D) Number of annual rings

**Last Answer :** Answer: Option D

**Description :** How do you work out the centre of a circle when you only know 4 points on it's circumference?

**Last Answer :** You only need 3 points to find the center. Here is a hint. The perpendicular bisector of any chord of a circle goes through the center. If you need more help, I will provide it.

**Description :** In a shaft rotated by a couple, the shear force varies (A) From zero at the centre to a maximum at the circumference (B) From minimum at the centre of maximum at the circumference (C) From maximum at the centre to zero at the circumference (D) Equally throughout the section

**Last Answer :** (A) From zero at the centre to a maximum at the circumference

**Description :** Magnitude of shear stress induced in a shaft due to applied torque varies from a. Maximum at centre to zero at circumference. b. Maximum at centre to minimum (not-zero) at circumference. c. Zero at centre to maximum at circumference. d. Minimum (not zero) at centre to maximum at circumference.

**Last Answer :** c. Zero at centre to maximum at circumference.

**Description :** What is the circumference of a circle with a diameter of 40 millimeters.?

**Last Answer :** 125.66 mm

**Description :** What is the diameter of a 22.5 circumference?

**Last Answer :** 6

**Description :** What is the diameter of a circle with a circumference of 12.25?

**Last Answer :** Diameter of circle: 12.25/pi = 3.899 rounded to 3 decimalplaces

**Description :** What is the diameter of a circumference of 2400mm?

**Last Answer :** Divide circumference by pi and you get 2400mm/3.14159 =approximately 763.94mm diameter.

**Description :** What will happen if the diameter of the circle doubles how will the circumference change?

**Last Answer :** The circumference also doubles.

**Description :** What is the diameter if the circumference is 4.25 inches?

**Last Answer :** Diameter of circle: 4.25/pi = 1.353 inches rounded to 3 decimalplaces

**Description :** If a circle has a circumference of 132 inch what is the diameter?

**Last Answer :** Diameter of circle: 132/pi = 42 inches rounded to the nearestwhole number

**Description :** How do you figure out the circumference of something without knowing the diameter?

**Last Answer :** If you know the radius, double that to get diameter. If you haveneither radius or diameter, then measure around the outside.

**Description :** What is the circumference of a plate with a diameter of 4.3?

**Last Answer :** Circumference of plate: 4.3*pi = 13.5 rounded to one decimalplace

**Description :** How do you find the circumference of a circle knowing only the diameter?

**Last Answer :** Circumference of a circle: pi times diameter

**Description :** What is circumference of a 192 diameter?

**Last Answer :** circumference = π × diameter= π × 192 units= 192π units≈ 603 units

**Description :** What is the circumference of the circle if the diameter is 24cm?

**Last Answer :** Circumference of circle: 24*pi = 75.398 cm rounded to 3 decimalplaces

**Description :** If the diameter is 16 cm what is the circumference?

**Last Answer :** Circumference of circle: 16*pi = 50.265 cm to 3 decimalplaces

**Description :** what is the circumference of a 10 ft. diameter table?

**Last Answer :** 123.14"

**Description :** How is the circumference of a circle related to the length of its diameter?

**Last Answer :** asd

**Description :** The globe: a. is closer to the orbital floor than the roof b. is closer to the lateral wall of the orbital cavity than to medial wall c. has a vertical diameter less than the anteroposterior diameter d. has an anterior segment which form 1/4 of the circumference e is least protected laterally

**Last Answer :** is closer to the lateral wall of the orbital cavity than to medial wall

**Description :** An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm placed symmetrically along the circumference. If it carries a load of 40, 000 kg axially, the stress is (A) 49.9 kg/cm2 (B) 100 kg/cm2 (C) 250 kg/cm2 (D) 175 kg/cm

**Last Answer :** Answer: Option A

**Description :** The weaving length of a roadway is the distance (A) Between the channelizing islands (B) Equal to half circumference (C) Equal to total width of adjoining radial roads (D) Equal to diameter of rotary

**Last Answer :** Answer: Option A

**Description :** Develop a program to find diameter, circumference and area of circle using function.

**Last Answer :** #include<stdio.h> #include<conio.h> void circle(float r) { float diameter,circumference,area; diameter=2*r; printf("\n Diameter=%f",diameter); circumference=2*3.14*r; printf ... :"); scanf("%f",&radius); circle(radius); getch(); }

**Description :** Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations

**Last Answer :** (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectivel

**Description :** Why does atomic size (radius) decrease across a period?

**Last Answer :** The atomic radius decreases along a period because the atomic number increases by one, but the additional electron goes to the same shell.There is no change in the number of shells but more ... in closer to the nucleus which leads to contraction of the atom and thus decrease in atomic size

**Description :** Why does atomic size of an atom increase down the group?

**Last Answer :** In moving down a group, new shell is added to the atom. There is an increase in the energy level. The distance of the outermost electron from the nucleus increases. This increases the size of the atom down the group.

**Description :** Give reason: Atomic size of sodium atom is greater than that of chlorine atom.

**Last Answer :** Sodium is in the 1 st group where as chlorine is in 17 th group. We know that the atomic size decreases down the group. Hence sodium atom has larger atomic size than that of chlorine atom.

**Description :** What is the radius of an imaginary shell around an atom which determines how close two nonbonded atoms may approach each other called?

**Last Answer :** ANSWER: VAN DER WAALS RADIUS

**Description :** Apart from tetrahedral geometry another possible geometry for CH4 is square planar with four hydrogen atoms at the corners of the square and the carbon atom at the centre.Explain why CH4 is not square planar?

**Last Answer :** Ans For square planar arrangement hybridization is dsp2 which is not possible with Carbon as it does not have d orbital with it

**Description :** Apart from tertrahedral geometry ,another possible geometry for CH4 is square planar with the four H atoms at the corners of square and C atom at its centre. Explain why CH4 is not square planar.

**Last Answer :** Ans. In square planar geometry , the bond angle will be 90 ° which is less than bond angle in tetrahedral geometry ( 109.5 °).Therefore repulsive forces in square planar will be more and it will be less stable as compared to tetrahedral geometry.

**Description :** Which of the following terms refers to the energy released when an electron is added to a neutral atom? w) electrovalence x) electron affinity y) electroconductance z) none of these

**Last Answer :** ANSWER: X -- ELECTRON AFFINITY

**Description :** Which of the following terms refers to the number of molecules or ions attached to a central metallic atom? w) coordination number x) connection number y) bonding number z) none of these

**Last Answer :** ANSWER: W -- COORDINATION NUMBER

**Description :** What is Atomic Radius ?

**Last Answer :** Atomic radius measures the distance of the outer electron cell from the nucleus of the atom.

**Description :** Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has – (1) high bond dissociation energy (2) smaller atomic radius (3) stable half filled 2p sub level (4) high nuclear charge

**Last Answer :** (3) stable half filled 2p sub level Explanation: Ionization energy is a measure of the ease in which atoms lose electrons and become positive ions.