Question

Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi. (4 points) C = 11π; A = 44π C = 22π; A = 44π C = 11π; A = 121π C = 22π; A = 121π

Answer 1

C = 22π, A = 121π

Explanation:

formula for circumference is C=2πr. C= 2π(11) therefore C=22π

formula for are is A=πr² therefore A=π(11)²= 121π

Answer 2

C = 22π; A = 121π.

Explanation:

To find the circumference of a circle, you do pi times the diameter. That would be 22pi.

To find the area of a circle, you do pi * r^2. The radius is the diameter divided by 2. That is 22 / 2, which is 11. Then, the area would be pi * 11^2 = pi * 121 = 121pi.

So, C = 22pi; A = 121pi.

Hope this helps!