Question

Find the area of the shaded region in the figure given here, if BC = BD = 8 cm, AC = AD = 15 cm, and O is the centre of the circle.

Answer 1

diameter = AOB
∠ACB = ∠ADB = 90
 Aspect ratio of ABC = AR of ABD = 1/2 BC x AC
 Aspect ratio of ABC = AR of ABD= 60 cm2

by using pythogaros theorem
AB² = AC² + BC²
AB²= 15² + 8²
AB = 17cm

radius = 17/2

Ar of C= 22/7 x 17/2 x 17/2
= 3179/ 14 cm2

AR of shaded region = Ar of C - Ar of ABC - Ar of ABD
= 3179/14 - 60 - 60
= 1499/14 cm2

Answer 2

I am clear of that answer but this is the pic