Question

from a rectangular sheet of paper abcd with ab=40 and ad = 28 a semi circle prtion with bc as diameter is cut of . fint the area of remaining part

Answer 1

First find the area of the rectangle ABCD
=28*40
=1120
Diameter of circle =BC=AD=28
Radius=14
then find the area of semicircle=1/2 of circle
=1/2*22/7*14*14
=308
then subtract=arof ABCD-ar of semi cirlcle
=1120-308
=812
this is the remaining ar of paper

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