Question

Find the diameter of the whose circumference is 75.42cm

Answer 1

We know,

circumference= 2*3.14*r

75.42=2*3.14*r

75.42/2=3.14*r

37.71/3.14=r

I am rounding the answer into 2 decimal places as the answer is going endlessly

12.00=r

diameter=2*radius

radius=12

diameter=12*2

diameter=24cm

therefore diameter is 24cm.

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Answer 2

Circumference of circle =πd=75.42
πd=75.42=22/7*d=75.42
d=75.42*7/22=3.43*7=24.01