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let the radius be x cm
therefore diameter= 2x cm
circumference= 3(2x) cm +3cm
2πr= 6x cm+3 cm
2×22/7×x cm= 6x cm +3 cm
44x cm = 42x cm + 21cm
2x cm = 21 cm
x = 10.5 cm
therefore diameter= 21 cm
therefore diameter= 2x cm
circumference= 3(2x) cm +3cm
2πr= 6x cm+3 cm
2×22/7×x cm= 6x cm +3 cm
44x cm = 42x cm + 21cm
2x cm = 21 cm
x = 10.5 cm
therefore diameter= 21 cm
tanishkrathore:
no the correct answer is 21
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