Question

Work out the circumference and area of the circle with the diameter of 1.8 use pie

Answer 1

Circumference of circle: 1.8π

Area of circle: 0.81π

Explanation:

Diameter = 2(radius) => radius r = 1.8/2 = 0.9

Circumference of circle: 2πr = 2(π)(0.9) = 1.8π

Area of circle: πr^2 = π(0.9^2) = 0.81π