Question

Asphere has a diameter of 20 ft What is its surface area?
The surface area of the sphere is?

Answer 1

Answer:

1256 ft²

Step-by-step explanation:

20 ÷ 2 = 10

4πr²

4 × 3.14 × 10²

4 × 3.14 × 100

4 × 314

1256