Description : The radius of a sphere is 8 cm and 0.02 cm is the error in its measurement. Find the approximate error in its volume.
Last Answer : The radius of a sphere is 8 cm and 0.02 cm is the error in its measurement. Find the approximate error in its volume.
Description : There is an error of `0.2%` in measurment of the redius of a sphere. Find the percentage error in its (i) volume, (ii) surface.
Last Answer : There is an error of `0.2%` in measurment of the redius of a sphere. Find the percentage error in its (i) volume, (ii) surface.
Description : If the ruling gradient on any highway is 3%, the gradient provided on the curve of 300 metre radius, is (A) 2.00 % (B) 2.25 % (C) 2.50 % (D) 2.75 %
Last Answer : Answer: Option D
Description : The % of ‘K’ in Extracellular fluid is about (A) 1% (B) 2 to 3% (C) 10% (D) 15%
Last Answer : Answer : A
Description : The percentage of reinforcement in slabs is generally in the range of [ A ] 0.3% to 0.5% [ B ] 0.5% to 1.0% [ C ] 1.0% to 1.5% [ D ] 1.5 % to 2.0%
Last Answer : [ A ] 0.3% to 0.5%
Description : Nandu purchased a mobile phone and got a discount of 5% from dealer. he sold that mobile phone at a profit of 10% on his purchase price. What is the percentage profit on actual price of the mobile phone? 1. 2% 2. 3% 3. 4% 4. 4.5 %
Last Answer : 4. 4.5 %
Description : If the radius of a sphere is 2r, then its volume will be -Maths 9th
Last Answer : As, r=2r Volume of sphere = 4/3π(2r)^3 =32/3πr^3
Last Answer : (d) Given, radius of a sphere = 2r Volume of a sphere =4/3 π(Radius)3 = 4/3 π(2r)3 = 4/3 π 8r3 = (32 πr3)/3 cu units Hence the volume of a sphere is (32 πr3)/3 cu units.
Description : The radius of sphere is 2r, then find its volume. -Maths 9th
Last Answer : Volume of the sphere = 4/3.π.(2r)3 = 32/3πr3
Description : In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively.
Last Answer : In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, ... % (C) (3/13) % (D) 16 %
Description : An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch, (A) 1 % (B) 1.5 % (C) 2 % (D) 2.5 %
Description : An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch. (A) 1 % (B) 1.5 % (C) 2 % (D) 2.5 %
Description : A sphere and a right circular cone of same radius have equal volumes. By what percentage does the height of the cone exceed its diameter ? -Maths 9th
Last Answer : answer:
Description : When an error of 1%is made in the length and breadth of a rectangle, the percentage error (%) in the area of a rectangle will be (A) 0 (B) 1 (C) 2 (D) 4
Last Answer : Answer: B Suppose length is 10 and bredth is 10 then area is 100, 1 % error then 9.9 *9.9 = 98.01. Hence 2 % error will be there.
Description : How do you figure out the percent uncertainty in the volume of a sphere when you know its radius with a particular degree of certainty?
Last Answer : I have never had to do a problem like this, so apologies if I lead you astray. I would start here: what’s the relationship between the radius of a sphere and its volume?
Description : The radius of a sphere decreases from 10 cm to `9.9` cm. Find (i) approximate decrease in its volume. (ii) approximate decrease in its surface.
Last Answer : The radius of a sphere decreases from 10 cm to `9.9` cm. Find (i) approximate decrease in its volume. (ii) approximate decrease in its surface.
Description : The volume of a sphere (V) varies directly as the cube of its radius. The volume of the sphere of radius 3 cm is ` 36 pi cm^(3)`. What is the volume o
Last Answer : The volume of a sphere (V) varies directly as the cube of its radius. The volume of the sphere of ... What is the volume of a sphere of radius 15 cm?
Description : Find the ratio of surface area and volume of the sphere of unit radius. -Maths 9th
Last Answer : Required ratio = 4πr2 / 4/3.πr3 = 3 x 4 x π x (1)2 / 4 x π x (1)3 = 3/1 (Since, r = 1) i.e., 3 : 1
Description : What is the approximate volume of a sphere with a radius of 12 units?
Last Answer : volume sphere = 4/3 πr³= 4/3 × π × 12³= 2304π≈ 7238 units³
Description : What is the volume of the sphere if it has a radius of 5?
Last Answer : Volume of sphere: 4/3*pi*5^3 = 524 cubic units rounded tonearest whole number
Description : The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which ‘D’ is the diffusivity of solute, is (A) D/a (B) D/2a (C) Proportional to √D (D) Dependent on the Reynolds number
Last Answer : (D) Dependent on the Reynolds number
Description : The absolute percentage error in the computed discharge over a rectangular weir corresponding to an absolute error of 1.5 % in the measurement of head over the sill of the weir would be : (a) 1.5 (b) 2.25 (c) 2.5 (d) 3.75
Last Answer : (b) 2.25
Description : Asian Development Bank in its Outlook supplement has retained India's growth forecasts at 7.3% for the current fiscal (2018-19) and __ % for the following financial year (2019-20)
Last Answer : Vedangi Kulkarni
Description : Which is more concentrated 3% or 50mg % (convert to g/dL) show work?
Last Answer : mod Base
Description : Adult human brain is about-----% of the total body weight. A. 2% (Answer) B. 3% C. 7% D. 8%
Last Answer : A. 2% (Answer)
Description : Present rate of Senior citizens saving scheme account is____ payable quarterly. a) 10% b) 9.3% c) 8.5 % d) 9.5%
Last Answer : b) 9.3%
Description : The CO2 content of soil air is (A) 3% (B) 0.3 % (C)0.03% (D) 0.003%
Last Answer : B) 0.3 %
Description : If the expected time of completion of a project is 60 weeks with a standard deviation of 5 weeks, the probability of completing the project in 50 weeks and 65 weeks respectively will be (A) 2.3% and 84.1% (B) 97.7% and 84.1% (C) 97.7 % and 15.9% (D) 15.9% and 97.7%
Last Answer : (A) 2.3% and 84.1%
Description : According to Whitney's theory, ultimate strain of concrete is assumed to be (A) 0.03 % (B) 0.1 % (C) 0.3 % (D) 3 %
Last Answer : Answer: Option C
Description : A man sells two flats for Rs. 8000 each. neither loosing nor gaining in the deal. If he sold one at a gain of 25%, the other commodity sold at a loss of: A. 50/3 % B. 18 /3% C. 25% D. 32%
Last Answer : Answer – A (50/3 %) Explanation – Total S.P = 16000 Rs. and Total C.P = 16000 Rs. S.P. of Ist = Rs. 8000. Gain on it = 25% C.P of Ist = Rs. (100/125 x 8000) = Rs.6400 C.P of 2nd = Rs, (16000 – 6400) = Rs. 9600. S.P of 2nd = 8000. ∴loss on 2nd commodity = (1600/9600 x 100)% = 50/3%
Description : A man sells two flats at the rate of Rs. 2 lakhs each. On one he gains 3% and on the other, he loses 3%. His gain or loss % in the whole transaction is A. 9% loss B. 2% loss C. 3% loss D. 25% loss
Last Answer : Answer – A (0.09% loss) Explanation – Loss% = X^2/100=(3)^2/100 % =0.09%
Description : A shopkeeper marked a suit at Rs.400. He sold it after allowing a discount, and still made at a profit of 25%. At what percentage above its cost price did he marked the suit, if he sold it for Rs.320? a)50% b)66 2/3% c)62 1/2% d)56 1/4%
Last Answer : d)56 1/4%
Description : What percentage of the cell is made up of carbohydrates a. 1% b. 2% c. 3% d. 4%
Last Answer : 1%
Description : The loss made by selling 16 m of a cloth equals the selling price of 4 m of that cloth. Find the loss percentage a)15% b)20% c)33 1/3% d)25%
Last Answer : b)20%
Description : The profit made by selling 25 m of a cloth equals the selling price of 5 m of that cloth. find the profit percentage? a)25% b)20% c)16 2/3% d)30%
Last Answer : a)25%
Description : The profit made by selling 30 m of a cloth equals the cost price of 6 m of that cloth. find the profit percentage a)25% b)20% c)16 2/3% d)30%
Description : The loss made by selling 20 m of a cloth equals the cost price of 5 m of that cloth. Find the loss percentage a)33 1/3% b)25% c)20% d)40%
Last Answer : b)25%
Description : How many balls, each of radius 2 cm can be made from a solid sphere of lead of radius 8 cm ? -Maths 9th
Last Answer : No.of balls = Volume of share / Volume of each ball = 4 / 3π × 8 × 8 × 8 / 4 / 3π × 2 × 2 × 2 = 64
Description : The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is A. 25 % B. 50 % C. 10 % D. 5 %
Last Answer : ANS: B
Description : If the volume of a sphere is numerically equal to its surface area, then find the diameter of the sphere. -Maths 9th
Last Answer : Let r be the radius of the sphere. and Volume of a sphere = surface area of the sphere ⇒ 4 / 3πr3 = 4πr2 ⇒ r = 3 cm ∴ Diameter of the sphere = 2r = 2 × 3 = 6 cm
Description : If a sphere is inscribed in a cube, then find the ratio of the volume of the cube to the volume of the sphere. -Maths 9th
Last Answer : The ratio of the volume of the cube to the volume of the sphere are as
Description : M.I. of sphere of 0.5 m radius about a mutually perpendicular axis (Z-axis) when its M.I. about X-axis and Y-axis are 50 kgm2 and 50 kgm2 is a.50 Kgm2 b.Tapered bearing c.100 Kgm2 d.25 Kgm2 e.12.5 Kgm2
Last Answer : a. 50 Kgm2
Description : A cone is 8.4 cm high and the radius of its base is 2.1 cm. It is melted and recast into a sphere. -Maths 9th
Last Answer : NEED ANSWER
Last Answer : According to question find the radius of the sphere
Description : A square has its side equal to the radius of the sphere. The square revolves round a side to generate a surface of total area S. -Maths 9th
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 ?