NIELIT 2019 Feb Scientist C - Section C: 11

Question

For a sphere of radius $10$ cm, the numerical value of the surface area is how many percent of the numerical value of its volume?

• A. $26.5\%$
• B. $24\%$
• C. $30\%$
• D. $45\%$

Answer 1

ans :-- option C

surface area :-- 4 * pie * R^2

volume :-- 4 * pie * R^3 / 3

percentage = 4 * pie * 10 * 10 *100 / (4/3) * pie * 10 * 10 * 10

                  = 30 %