Radius of a Circle

Question

What is the radius of the circle with an opening of 2π/3 and arc length of 10m? 

Answer 1

We know that

arc length = opening angle * radius --------(1)

we have,

arc length = s= 10

opening angle = 2π/3

put values in (1)

10 = 2π/3 * radius

30/2π = radius

Hence, the radius of the circle will be 15/π .

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