Chapter 10 Circles

Chapter 10 Circles
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Chapter 10 Circles

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NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.1 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.1 -Maths 9th

Last Answer : 1. Fill in the blanks: (i) The centre of a circle lies in _________ of the circle. (ii) A point, whose distance from the centre of a circle is greater than its radius lies in _________ of the circle. ( ... the chord and its corresponding arc is a segment.] (vi) True [∵ A circle is drawn on a plane.]

NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.2 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.2 -Maths 9th

Last Answer : 1. Recall that two circles are congruent if they have the same radii. Prove that equal chords of congruent circles subtend equal angles at their centres. We have a circle having its centre at O and two equal chords ... [SAS criterion] ∴ Their corresponding parts are equal, i.e. AB = CD

NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.3 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.3 -Maths 9th

Last Answer : 1. Draw different pairs of circles. How many points does each pair have in common? What is the maximum number of common points? Let us draw different pairs of circles as shown below: We have Thus, two circles ... .c.t.] ⇒ M is the mid-point of AB. Thus, OO' is the perpendicular bisector of AB.

NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.4 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.4 -Maths 9th

Last Answer : 1. Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centres is 4 cm. Find the length of the common chord. We have two intersecting circles with centres at O and O' respectively. ... = 2x m = 2 x 103 m Thus, the length of the string of each phone = 2 x 103 m.

NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.5 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.5 -Maths 9th

Last Answer : 1. In the figure, A, B and C are three points on a circle with centre O such that ∠ BOC = 30º and ∠AOB = 60°. If D is a point on the circle other than the arc ABC, find ∠ADC. We have a ... = 90º Similarly, ∠B= ∠D = 90º ⇒ Each angle of the parallelogram ABCD is of 90º. Thus, ABCD is a rectangle.

NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.6 -Maths 9th

Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.6 -Maths 9th

Last Answer : 1. Prove that the line of centres of two intersecting circles subtends equal angles at the two points of intersection. We have two circles with centres O and O' respectively such that they intersect ... , the circle passes through the point of intersection (O) of the diagonals of the rhombus ABCD.

MCQ Questions for Class 9 Maths Chapter 10 Circles Number Systems with answers -Maths 9th

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Cbqs (case base study ) of chapter 10 Circles of maths class 9th -Maths 9th

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How many miles will a person run during a 10 kilometer race?

Description : How many miles will a person run during a 10 kilometer race?

Last Answer : What kind of mile? There are many.

Does a Riemann like hypothesis exist for 10 dimensions?

Description : Does a Riemann like hypothesis exist for 10 dimensions?

Last Answer : The Riemann Hypothesis has to do with the distribution of prime numbers and has nothing to do with other dimensions as far as I know.

In math, using decimals, how would 10.01 be written out in words?

Description : In math, using decimals, how would 10.01 be written out in words?

Last Answer : Well, I’d say ten point o-one, but yes, 0.01 is one hundredth, so 10.01 is ten units and one hundredth.

ABCD is a parallelogram with diagonal AC If a line XZ is drawn such that XZ ∥ AB, then BX/XC = ? (a) (AY/AC) (b) DZ/AZ (c) AZ/ZD (d) AC/AY Answer: (c) AZ/ZD 13. In the given figure, value of x (in cm) is (a) 5cm (b) 3.6 cm (c) 3.2 cm (d) 10 cm

Description : ABCD is a parallelogram with diagonal AC If a line XZ is drawn such that XZ ∥ AB, then BX/XC = ? (a) (AY/AC) (b) DZ/AZ (c) AZ/ZD (d) AC/AY Answer: (c) AZ/ZD 13. In the given figure, value of x (in cm) is (a) 5cm (b) 3.6 cm (c) 3.2 cm (d) 10 cm

Last Answer : (a) 5cm

In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Description : In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Last Answer : (c) 10 cm

In a square of side 10 cm, its diagonal is equal to (a) 15 cm (b) 10√2 cm (c) 20 cm (d) 12 cm

Description : In a square of side 10 cm, its diagonal is equal to (a) 15 cm (b) 10√2 cm (c) 20 cm (d) 12 cm

Last Answer : (b) 10√2 cm

What value/s can x take in the expression k(x – 10) (x + 10) = 0 where k is any real number. (a) 100, -100 (b) Infinitely many (c) Depends on value of k (d) 10, -10

Description : What value/s can x take in the expression k(x – 10) (x + 10) = 0 where k is any real number. (a) 100, -100 (b) Infinitely many (c) Depends on value of k (d) 10, -10

Last Answer : (d) 10, -10

If one zero of the quadratic polynomial x 2 + 3x + k is 2, then the value of k is (a) 10 (b) –10 (c) 5 (d) –5

Description : If one zero of the quadratic polynomial x 2 + 3x + k is 2, then the value of k is (a) 10 (b) –10 (c) 5 (d) –5

Last Answer : (b) –10

Nine playing cards are numbered 2 to 10. A card is selected at random. What is the probability that the card will be an odd number? a. 1/9 b. 2/9 c. 4/9 d. 3/7

Description : Nine playing cards are numbered 2 to 10. A card is selected at random. What is the probability that the card will be an odd number? a. 1/9 b. 2/9 c. 4/9 d. 3/7

Last Answer : c. 4/9

The coordinates of the points where 2x + 5y – 10 =0 meets y axis is e) (0 , 2) f) (0 , -2) g) (2 , 2) h) (-2 , -2)

Description : The coordinates of the points where 2x + 5y – 10 =0 meets y axis is e) (0 , 2) f) (0 , -2) g) (2 , 2) h) (-2 , -2)

Last Answer : e) (0 , 2)

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream. Then what is the speed of the stream? (a) 3km/hr (b) 5km/hr (c) 6km/hr (d) 7km/hr

Description : A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream. Then what is the speed of the stream? (a) 3km/hr (b) 5km/hr (c) 6km/hr (d) 7km/hr

Last Answer : (a) 3km/hr

What is the perimeter of the sector with radius 10.5 cm and sector angle 60o? (a) 48 cm (b) 96 cm (c) 64 cm (d) 32 cm

Description : What is the perimeter of the sector with radius 10.5 cm and sector angle 60o? (a) 48 cm (b) 96 cm (c) 64 cm (d) 32 cm

Last Answer : (d) 32 cm

The coordinates of the points where 2x + 5y – 10 =0 meets y axis is a) (0 , 2) b) (0 , -2) c) (2 , 2) d) (-2 , -2)

Description : The coordinates of the points where 2x + 5y – 10 =0 meets y axis is a) (0 , 2) b) (0 , -2) c) (2 , 2) d) (-2 , -2)

Last Answer : a) (0 , 2)

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream. Then what is the speed of the stream? (a) 3km/hr (b) 5km/hr (c) 6km/hr (d) 7km/hr

Description : A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream. Then what is the speed of the stream? (a) 3km/hr (b) 5km/hr (c) 6km/hr (d) 7km/hr

Last Answer : (a) 3km/hr

The midpoint of the line segment joining the points B and D is: (a) (10,11) (b) (11,5) (c) (7/2,11/2) (d) (5,11/2)

Description : The midpoint of the line segment joining the points B and D is: (a) (10,11) (b) (11,5) (c) (7/2,11/2) (d) (5,11/2)

Last Answer : (c) (7/2,11/2)

The area to be covered by Green Grass is: a) 4 square km b) 5 square km c) 9 square km d) 10 square km

Description : The area to be covered by Green Grass is: a) 4 square km b) 5 square km c) 9 square km d) 10 square km

Last Answer : a) 4 square km

"Ravi is 10 years older than Rehan. Five years ago, one-seventh of Ravi's age was equal to one-fifth of Rehan's age." If Rehan's age be 'x' years and Ravi's age be 'y' years, which of the following pair of linear equations is describing it algebraically? (a) x - y = 10 and 7x - 5y + 10 = 0 (b) y -x = 10 and 5y -7x + 10 = 0 (c) x + y = 10 and 7x + 5y - 10 = 0 (d) x - y = -10 and 7y - 5x + 10 = 0

Description : "Ravi is 10 years older than Rehan. Five years ago, one-seventh of Ravi's age was equal to one-fifth of Rehan's age." If Rehan's age be 'x' years and Ravi's age be 'y' years, which of the following pair of linear equations is ... y = 10 and 7x + 5y - 10 = 0 (d) x - y = -10 and 7y - 5x + 10 = 0

Last Answer : (b) y -x = 10 and 5y -7x + 10 = 0

In the given figure, if AB = 14 cm, BD = 10 cm and DC = 8 cm, then the value of tan B is a) 4/3 b) 14/3 c) 11/3 d) 9/12

Description : In the given figure, if AB = 14 cm, BD = 10 cm and DC = 8 cm, then the value of tan B is a) 4/3 b) 14/3 c) 11/3 d) 9/12

Last Answer : a) 4/3

ABCE is an isosceles trapezoid and ACDE is a rectangle. AB = 10 and EC = 20. What is the length of AE?

Description : ABCE is an isosceles trapezoid and ACDE is a rectangle. AB = 10 and EC = 20. What is the length of AE?

Last Answer : Answer: AE = 10.

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by ayoung member. Find how much younger is the new member?

Description : The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by ayoung member. Find how much younger is the new member?

Last Answer : Answer: 40 years.

Calculate (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these

Description : Calculate (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these

Last Answer : (a) 99/1020

If 2x-y=4 then calculate 6x-3y=? (a)15 (b)12 (c)18 (d)10

Description : If 2x-y=4 then calculate 6x-3y=? (a)15 (b)12 (c)18 (d)10

Last Answer : (b)12

The sides of a triangle are in the ratio 3 : 5 : 7 and its perimeter is 30 cm. The length of the greatest side of the triangle in cm is (1) 6 (2) 10 (3) 14 (4) 16

Description : The sides of a triangle are in the ratio 3 : 5 : 7 and its perimeter is 30 cm. The length of the greatest side of the triangle in cm is (1) 6 (2) 10 (3) 14 (4) 16

Last Answer : (3) 14

Is it possible to solve a magic square made up of a system of unknown symbols?

Description : Is it possible to solve a magic square made up of a system of unknown symbols?

Last Answer : No. I could populate a 9×9 magic square with the letters A through I. You would never figure out what numbers were represented by the letters because a 9×9 magic square is not unique.

Did we invent math,or did we discover it?

Description : Did we invent math,or did we discover it?

Last Answer : God invented it.

How many of you can pass this simple test?

Description : How many of you can pass this simple test?

Last Answer : I can.