Curved surface area of hemisphere of diameter $2 r$ is :

2 π r^{2}

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3 π r^{2}

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4 π r^{2}

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8 π r^{2}

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Solution

The correct option is A $2 π r^{2}$
Diameter $= 2 r$
Radius $= r$
$∴$ Curved surface area of hemisphere $= 2 π r^{2}$

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