Question

Find the radius of circle whose circumference is 22

Answer 1

2πr = 22 cm

πr = 22 / 2 = 11 cm

r = 11 / π cm

r ≈ 11 / 3.14 cm

r ≈ 3.5 cm

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Answer 2

Circumference the circle=22

Radius of the circle =

$\frac{c}{2\pi}$

$\frac{22 \times 7}{2 \times 22}$

$\frac{7}{2}$

$3.5$

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