The diameter of a solid hemisphere is 42, cm. | vedclass

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(D) Given,the diameter of the hemisphere $d = 42\, cm$.Therefore,the radius $r = \frac{d}{2} = \frac{42}{2} = 21\, cm$.The formula for the curved surf

Vedclass · Accepted Answer

$2772$

Vedclass · Answer

(D) Given,the diameter of the hemisphere $d = 42\, cm$.Therefore,the radius $r = \frac{d}{2} = \frac{42}{2} = 21\, cm$.The formula for the curved surface area $(CSA)$ of a hemisphere is $2\pi r^2$.Substituting the values,we get:$CSA = 2 	imes \frac{22}{7} 	imes (21)^2$$CSA = 2 	imes \frac{22}{7} 	imes 21 	imes 21$$CSA = 2 	imes 22 	imes 3 	imes 21$$CSA = 44 	imes 63 = 2772\, cm^2$.Thus,the curved surface area of the hemisphere is $2772\, cm^2$.

The diameter of a solid hemisphere is $42\, cm.$ Find the curved surface area of a hemisphere (in $cm^2$).

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