Question

Calculate the radius of a circle circumference is 22cm

Answer 1

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☆ We know that circumference = 2πr

$22 = 2\pi r \\ \\ 22 = 2 \times \frac{22}{7} \times r \\ \\ \frac{22 \times 7}{22 \times 2} = r \\ \\r = 3.5 \: cm$

${\huge\color{Red}{Answer~is~3.5~cm. }}$

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Answer 2

Hey there!
Here is your answer...

Circumference of the circle = ×2pie×r

22cm = 2 × 22/7 × r

r = 22 × 7/2 × 22

r = 7/2

r = 3.5 cm

Hope, it helps you...

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