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प्रश्न
The circumference of a circle is 39.6 cm. Find its area.
बेरीज
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उत्तर
Circumference = 39.6 cm
We know:
Circumference of a circle = 2πr
`=> 39.6 = 2 xx 22/7xx"r"`
`=>(39.6xx7)/(2xx22) = r`
⇒ r = 6.3 cm
Also,
Area of the circle = πr2
`=22/7xx6.3xx6.3`
= 124.74 cm2
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