Question

find the area of and perimeter of a shaded region in each of the following figures given that all arcs are either quadrants or semicircle​

Answer 1

ANSWER = 154.99cm²

Consider the large semi circle ,

Radius = 14 cm

area = 1/2πr²

= 3.14 × 14 × 14 /2

= 307.72 cm²

consider the small semicircle ,

radius = 7cm

area = 1/2 ×(3.14 × 7 × 7 )

= 76. 39 cm²

area of shaded part = 307.77 - (2×76.39)

= 154.99 cm²