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प्रश्न
The total surface area of a solid hemisphere of radius 7 cm is ______.
विकल्प
447π cm2
239 π cm2
174 π cm2
147 π cm2
98 π cm2
196 π cm2
`228 2/3 π "cm"^2`
उत्तर
The total surface area of a solid hemisphere of radius 7 cm is `underline(bb(147π "cm"^2)`.
Explanation:
r = 7 cm
Total surface area of hemisphere = 3πr2
= 3π × 72
= (3 × 49)π cm2
= 147π cm2
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