Question

Find the area of the shaded region

Answer 1

Not getting in to too much details but basically
Area of half circle - area of triangle
3.14r^2-1/2bh
r=6 b=12 h=6

Answer 2

20.52 cm²

Area of shaded region:

area of semi-circle - area of triangle

`\dashrightarrow \sf (1)/(2) \ \pi (radius)^2 \ - \ \sf (1)/(2) *base*height`

`\rightarrow \sf (1)/(2) (3.14)(6)^2 - (1)/(2) *12*6`

`\hookrightarrow \sf 56.52 \ - \ 36`

`\hookrightarrow \sf 20.52 \ cm^2`