Question

Find the circumference of circle of radius 7 cm

Answer 1

43.96

as the formula is=2pir

so it will be 2×3.14×7

Answer 2

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formula of circumference = 2 pie r

Radius = 7cm

2 pie r

$2 \times \frac{22}{7} \times 7 \\ \\ = 2 \times 22 \\ = 44$

= 44cm

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hope it helps