Question

If the radius of the circle is 22 cm find the circumference

Answer 1

the radius = r = 22cm

the circumference =

$2\pi \: r \\ 2 \times 3.14 \times 22$

138.16cm

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Answer 2

R = 22 cm

Circumference =2 π r

= 2 (22/7) (22)

= 2 × 484 /7

= 138.2 8 cm