width is required to make a conical tent 20 m in diameter and 42 m in slant height allowing 10% for folds and the stitching also find the cost of the canvas at the rate of rs 80per meter
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Area:22/7x10x42=1320
Add 10% for folds= 132
Total ...........................I452m2
cost of canvas............1452x80
=ll 6160
Ans Rs. II6l60
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