Question

the difference between circumference and diameter of a circle is 120 m . find the radius of the circle?

Answer 1

solution

let r be the radius.

in question given.

the difference between circumference and diameter of a circle is 135m.

2πr - 2r = 120


$2r( \frac{22}{7 } - 1) = 120$


$\frac{120 \times 7}{2 \times 15} \\ \\ r = \frac{840}{30}$


= 28


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Answer 2

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