13. If the circumference of a circle is 31.4 cm, then its radius will be
10 cm
5 cm
15 cm
20 cm
Other:
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0
Answer:
circumference of the circle=31.4
2πr=31.4
2×22/7×r=31.4
44/7r=31.4
44r=219.8
r=219.8/44
r= 4.99
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Answered by
1
∴ Radius of the Circle (r) = 10 cm
∴ Thus , Option (b) 5cm is the correct answer
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