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Question

Find circumference of a circle of diameter 4.2 cm.

A
13.2 cm
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B
13.7 cm
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C
14.2 cm
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D
14.9 cm
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Solution

The correct option is A 13.2 cm
Diameter of circle (d)=4.2 cm
Radius of circle (r)=d2=4.22=2.1 cm
Circumference of circle =2πr=2×227×2.1=13.2 cm
So, A is the correct option.

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