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प्रश्न
If the area of a circle is numerically equal to twice its circumference, then the diameter of the circle is ____________.
विकल्प
4 units
n units
8 units
2 units
MCQ
रिक्त स्थान भरें
उत्तर
If the area of a circle is numerically equal to twice its circumference, then the diameter of the circle is 8 units.
Explanation:
`pi "r"^2 = 2 pi "r" xx 2`
`=> "r" = 4`
`=> 2 "r" = 8` units
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