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attheendsasshowninthetigure.15. The shape of a garden is rectangular in the middle and semi-circularFind the area and the perimeter of this garden.8.4 m<21 m |
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Answer» Perimeter will be 2*(perimeter of a semicircle)+perimeter of rectanglehence radius of semicircle is 4.2m(8.4/2)Now the length, =21-(4.2+4.2)=12.6mhence breadth is 8.4mnow perimeter=2*(πr)+(2(l+b))=2*22/7*4.2+2(12.6+8.4)2*22*0.6+2*21=68.4mArea=2*(area of semicircle)+area of rectanglehencearea=2*(πr^2/2)+(l*b)=2*22/7*4.2*4.2+(12.6*8.4)=110.88+105.84=216.72m^2 sorry ur answer is wrong its answer is 161.28msq,51.6m |
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