Question

What is the surface ara of a sphere with a diameter of 16cm

Answer 1

Answer:

$256\pi {cm}^{2}$

Step-by-step explanation:

surface area of a sphere=4πr^2

diametre=16

$radius = \frac{diametre}{2}$

radius=8

$surface \: area \: of \: sphere = 4 \times \pi \times {8}^{2}$

$\: \: \: \: = 4 \times \pi \times 64$

$\: \: \: \: = 256\pi {cm}^{2}$

Answer 2

Answer:

1024pi cm²

Step-by-step explanation:

4pi(16)²

4pi256

1024pi