Question

Find the area and circumference of each shaded sector. Use 3.14 for . Round to the

nearest tenth.

Answer 1

Area = 226.1 ft^2

and circumference = 61.7 ft.

Both to the nearest tenth.

Explanation:

The area of shaded part

= 1/2 *3.14 r^2

= 1/2 * 3.14 * 12^2 = 226.1 ft^2.

Circumferences of the shaded part = diameter + length of the semicircle

= 2 *r + 3.14 * r

= 2*12 + 3.14 * 12

= 61.68 ft.