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प्रश्न
The surface area of a sphere is 616 cm². Its diameter is ______.
विकल्प
3.5 cm
7 cm
10.5 cm
14 cm
MCQ
रिक्त स्थान भरें
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उत्तर
The surface area of a sphere is 616 cm². Its diameter is 14 cm.
Explanation:
The surface area of a sphere is given by the formula A = 4πr2. Substituting the values, 616 = 4 × 22/7 × r^2,
which simplifies to r2 = 49, giving a radius (r) of 7cm. Therefore, the diameter of the sphere is 2r = 2 × 7 = 14.
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