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volume of cone = πr2h/3
here r= 3.5 and h= 3.5
substitute the r and h in the volume formula
π × 3.5 × 2 × 3.5/3
volume of rice= 44.9 cm³
CSA of Cone= πr(r+√h²+√r²)
substitute the value of r and h
you get the answer = 92.91
the required amount of cloth is 92.91 m
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