Answer:
C
Step-by-step explanation:
The circumference (C) of a circle is calculated using
C= 2πr ← r is the radius and has to be found
Given C = 20π , then
2πr = 20π ( divide both sides by 2π )
r = [tex]\frac{20\pi }{2\pi }[/tex] = 10
The area (A) of a circle is calculated using the formula
A = πr² = π × 10² = 100π m² → C
