Question

# Find the curved surface area of a cone with base radius $$5.25\ cm$$ and slant height $$10\ cm$$

Solution

## It is given thatRadius of the cone $$=5.25\ cm$$Slant height of the cone $$=10\ cm$$We know thatCurved surface area of the cone $$=\dfrac{22}{7}\times 5.25\times 10$$So we getCurved surface area of the cone $$=165\ cm^{2}$$Therefore the curved surface area of a cone is $$165\ cm^{2}$$MathematicsRS AgarwalStandard IX

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