Question

The volume and surface area of a sphere of radius 'r' respectively are

• A. $\frac{2}{3}\pi r^3$ and $4\pi r^2$
• B. $\frac{4}{3}\pi r^3$ and $2\pi r^2$
• C. $\frac{4}{3}\pi r^3$ and $4\pi r^2$
• D. $\frac{2}{3}\pi r^3$ and $2\pi r^2$

Answer 1

The correct option is C

$\frac{4}{3}\pi r^3$ and $4\pi r^2$

Given, 'r' is the radius of the sphere.
Then,
Volume of the sphere = $\frac{4}{3}\pi r^3$

Surface area of the sphere = $4\pi r^2$