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What length of tarpaulin 3 m wide will b...

What length of tarpaulin 3 m wide will be required to make conical tent of height 8 m and base radius 6 m ? Assume that the extra length of material that will be required for stitching margins and wastage in cutting is approximately 20 cm.
(Use `pi=3.14`)

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The correct Answer is:
63 m
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