Question

find area of shaded portion in above figure ( take π = 3.14 )
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Answer 1

area of trapezium = 1/2(a+b)h

= 1/2[120+(120+40)]100

= 280×50

= 14000cm²

area of inscribed circle = 3.14×7²

= 153.86cm²

area of inscribed rectangle = 40×20

= 800cm²

so, area of shaded region =

= 14000-153.86-800

= 13046.14cm²