एक व्रत का वयास 45 सेमी है तो क्षेत्रफल व त्रिज़या ज्ञात करे
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radius = व्यास/2
radius =22.5
area of circle =π×r×r
=22/7×22.5×22.5
= 1591.07
radius =22.5
area of circle =π×r×r
=22/7×22.5×22.5
= 1591.07
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