Area of a circle is 156m^2. Find the circumference of a circle.​

Answers (1)

let the radius of the circle= r cm

then

  area of the circle= \pi r^2=156 \ m^2

So we get

a= 7.04  m

Now

the circumference of a circle=2\pi r=2*\pi *7.04=44.23 \ m

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