Question

Question 1
If the radius of a sphere is 2r, then its volume will be:

A) $\frac{4}{3}\pi r^3$
B) $4\pi r^3$
C) $\frac{8}{3}\pi r^3$​​​​​​​
D) $\frac{32}{3}\pi r^3$​​​​​​​

Answer 1

The answer is D.
Given, radius of a sphere = 2r

Volume of a sphere $=\frac{4}{3}\pi (Radius{)}^3$

$=\frac{4}{3}\pi (2r{)}^3=\frac{4}{3}\pi .8r^3$

$=\frac{32\pi r^3}{3}cubicunits$ $[\because radius=2r]$