a conical tent is 12cm high and the radius of its base is 16m. find the slant height of the tent
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r = 12 m, h = 9 m
l=r2+h2−−−−−−√=122+92−−−−−−−√=15ml=r2+h2=122+92=15m
Cost of canvas = curved surface area××cost of 1 m2m2
=πrl×120=πrl×120
=3.14×12×15×120=Rs.67824
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