हिंदी

The total surface area of a solid hemisphere of radius 7 cm is ______.

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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`

MCQ
रिक्त स्थान भरें
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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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