Answer:
Explanation:
The radius of the circle is d/2
The Area of the circle is pi*r^2
The Area of the circle is pi * (d/2)^2
The Area of the circle is A = pi * (40/2)^2
The Area of the circle is A = 400 * pi
40π
Circumference Formula: C = 2πr
Step 1: Divide diameter by 2 to get the radius
40 / 2 = 20 m -> Radius
Step 2: Plug into the Circumference Formula
C = 2π(20)
C = 40π
Answer: 40π
4.5m questions
5.8m answers