Question

find a radii of circle whose circumference is 15.4cm​

Answer 1

Here is your answer :-

We know that, Circumference of a circle = 2 pi r

So, here

2 pi r = 15.4

= 2×(22/7)×r = 154/10

= (44/7) ×r= 154/10

Now, r = (7/44) × 154/10 = 2.45 cm.

Therefore, radius of the circle is 2.45 cm.

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