Question

2) A circle has an area of 12ñ cm?. Find its circumference. (Round your answer to the

nearest tenth.).

Answer 1

Circumference = 6.92π

or

21.75 cm

Explanation:

Area of Circle = π × radius²

Area of Circle = 12π cm

π × radius² = 12π

radius² = 12

radius = √12

radius = 3.46

Circumference = 2 × π × radius

Circumference = 2 × π × 3.46

Circumference = 6.92π