Question

The radius of a sphere is 2r, then its volume will be (a) 4/3 πr³ (b) 4πr³ (c) 8/3 πr³ (d) 32/3 πr³ ​

Answer 1

Answer:

Given: Radius of a sphere = 2r

To find: Volume of the sphere.

• We have a formula i.e $V = \frac{4}{3} \pi r^3$

Since radius given here is '2r'

• We need to substitute 2r in place of r.

Then we obtain,

• $V = \frac{4}{3} \pi (2r)^3$

⇒ $V = \frac{4}{3} \pi (8r^3)$

Hence, the volume of the sphere is 32/3πr³ (d)

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