Question

What is the surface area of a sphere with a diameter of 16 cm?

A. 1,024n cm²

B. 32n cm²

C. 256n cm²

D. 128n cm²

Answer 1

C is the correct answer

Answer 2

The correct option is C. The surface area of a sphere is 256π cm².

Explanation:

Given information: The diameter of the circle is 16 cm.

`r=(d)/(2)=(16)/(2)=8`

Radius of the circle is 8 cm.

Surface area of a sphere is

`A=4\pi r^2`

Where, r is radius.

`A=4\pi (8)^2`

`A=4\pi (64)`

`A=256\pi`

The surface area of a sphere is 256π cm². Therefore the correct option is C.