alone is the shape of a semicircle of diameter 35 cm the lord is surrounded by a flower bed of with 3.5 all round find the area of the flower bed in dm square
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radius of lawn=d5dm;
radius of lawn including flower bed=35/2+3.5=21dm ; area of flower bed=area of lawn including flower bed-area of lawn (1/2*22/7*21*21)-(1/2*22/7*35/2*35/2) 1/2*22/7(441-1225/4)=11/7*539/4 11*77/4=211.75dm^2
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