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(A) The curved surface area $(CSA)$ of a hemisphere is given by the formula $CSA = 2\pi r^{2}$.Given,$2\pi r^{2} = 306 \, cm^{2}$.The total surface ar

Vedclass · Accepted Answer

$459$

Vedclass · Answer

(A) The curved surface area $(CSA)$ of a hemisphere is given by the formula $CSA = 2\pi r^{2}$.Given,$2\pi r^{2} = 306 \, cm^{2}$.The total surface area $(TSA)$ of a hemisphere is given by the formula $TSA = 3\pi r^{2}$.We can express $TSA$ in terms of $CSA$ as: $TSA = \frac{3}{2} 	imes (2\pi r^{2})$.Substituting the given value: $TSA = \frac{3}{2} 	imes 306$.$TSA = 3 	imes 153 = 459 \, cm^{2}$.Therefore,the total surface area is $459 \, cm^{2}$.

The curved surface area of a hemisphere is $306 \, cm^{2}$. Then its total surface area is $\dots \dots \dots cm^{2}$.

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