Right circular cone and its surface area
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Q.
The base of a conical tent is of area . . A long vertical pole is placed at its centre so that it touches the roof of the tent.
How much canvas is needed to make the tent if the base is also covered with canvas?
Q. The formula for lateral surface area of a cylinder of radius 'r' and height 'h' is
- πrh
- πrl
- 2πrh
- πr2h