Question

find the area of the shaded region ​

Answer 1

Answer:

area of semicircle - area of triangle

= pie r2 /2- 1/2 × base × height.

Answer 2

Answer: 3.8125

Step-by-step explanation:

Area of semicircle= 0.5 πr^2

So, area of semicircle = 0.5*3.14*r^2

Since, r= OB

AND OB = 0.5 AB

AB^2 = AC^2 + BC^2

AB^2 = 9+16

AB= 5

So, OB=2.5=r

Area of semicircle = 0.5*3.14*2.5*2.5

Area of semicircle = 9.8125

Area of triangle ABC = 0.5*3*4

Area of trianhle ABC = 6

This imples,

Area of shaded region = Area of semicircle - Area of triangle

Area of shaded region = 9.8125-6

= 3.8125