find the shaped area (orange)
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Area of shaded reason=area of semicircle-area of triangle
by PGT
H²=P²+B²
H²=12²+16²
H²=144+256
H²=400
H=20
Area of triangle
1/2xbxh
1/2x16x12
96cm²
area of semicircle
1/2πr²
1/2x22/7x10x10 (20 is diameter)
1100/7
157.14
shaded region=157.14-96
61.14cm²
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