Respuesta :

sqdancefan

Answer:

100π in²

Explanation:

The formula for the area of a circle is

... A = πr²

The radius is half the diameter, so in your circle is (20 in)/2 = 10 in. Then the area is

... A = π(10 in)² = 100π in² . . . . matches the last selection

chinese85
The answer is 100 in^2