Answers

2016-03-09T09:07:37+05:30
Given that 

in the cone 
slant height  = 35 cm
perimeter of the circle = 132 cm
2πr = 132
r = 132 × 7/22 ×2
r = 21 cm
CSA of the cone  = πrl
= 22/7 ×21 ×35
= 2310 cm²
∴to cover the grains we need 2310 cm² tarpaulin
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