Question

Find the circumference and area of a circle with diameter 12 ft. Express your answer in terms of π.

A: 6π ft; 38π ft2
B: 8π ft; 36π ft2
C: 12π ft; 36π ft2
D: 12π ft; 64π ft2

Answer 1

Answer: Choice C

Work Shown:

d = diameter = 12 ft

r = radius = d/2 = 12/2 = 6 ft

circumference = 2*pi*r = 2*pi*6 = 12pi feet

area = pi*r^2 = pi*6^2 = 36pi square feet