Question

Find the circumference and area of a circle with a diameter of 14 inches. Leave your answers in terms of pi.

C = 14n; A = 49n
O C = 7n; A = 28n
O C = 14n; A = 28n
O C = 7n; A = 49n

Answer 1

Explanation:

step 1. The circumference (c) of a circle is the diameter of a circle x pi. c = d(pi) = 14pi.

step 2. The area (A) of a circle is the radius of a circle squared x pi. The radius of a circle is 1/2 x the diameter. A = (14/2)^2(pi) = 49pi.