Question

Help ASAP!!!!!!!!!!!

Answer 1

To answer this question the basic formula require is:
Pii*radius*radius (note: * symbol mean times or multiply)

Steps:

1. 20/2 = 10, we divided because radius is twice of diameter.

2. 10* 2 * pii

Third option is the correct answer.

Answer 2

i think its the third one

Explanation: