Question

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the question is find the radius of the circle whose circumference is 22pi

Answer 1

2pi r=22

2×22/7 × r =22

r=22×7 /22×2

R = 7/2

R=3.5

Answer 2

Circumference of circle = 2 * pie * radius
Circumference = 22 * pie
So , 22*pie = 2*pie * r
=22 * pie / 2* pie = r
Pie will be canceled out and we will left with 22/2 = r
r = 11