Math, asked by shree705, 1 year ago

please help me number 18

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Answered by Anonymous

initially area grazed by calf = pi x r^2
here r =redius pf roap
we get pi x 12x12 =144pi
now ', if the length of roap increases
area gazed=pi x 23 x 23=529pi
now ..to find additional area grazed
(529pi-144pi)=485 pi m^2

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