Question

In fig , AC = BD = 7 cm and, AB = CD = 1.75 cm. Semi-circles are drawn as shown in the figure, Find the area of the shaded region.

Answer 1

Answer:

36.1 cm ^ 2

Step-by-step explanation:

Area of shaded region =  2 ( area of semi - circle of radius 7/2 cm) - 2 ( area of semi - circle of radius 1.75/2 cm)

= 2 ( 1/2 x 22/7 x 7/2 x 7/2) - 2 ( 1/2 x 22/7 x 1.75/2 x 1.75/2 )

= 1155 / 32

= 36.1 cm ^ 2