Question

the peper in the from of a rectangle ABCD in which ab = 20 cm and BC =14cm semicircular portion with BC= 14cm a semicircular portion with bc as diameter is cut off.find the area of the remaining part.
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Answer 1

ar of abcd = l*b=20*14=280 cm²

ar of semicircle =πr²/2

π*7*7/2

π*49/2

22*7/2=77cm²

area remaining =280-77=203cm²