Question

A circle has a diameter of 24 units. Find the circumference and area of the circle in terms of π.

Answer 1

C ≈ 75.4

A ≈ 452.39

Explanation:

r = d/2 = 24/2 = 12

Circumference = 2πr = 2·π·12 ≈ 75.39822 ≈ 75.4

Area = π
`r^2`= π·
`12^2` ≈ 452.38934 ≈ 452.39

Answer 2

Circumference=24 pi
Area=144 pi, shown clearly in photo