Question

Find the circumference of the circles with the radius 28 mm

Answer 1

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Given,

r = 28mm

Therefore,

Circumference= 2r

= 2*28

= 56mm

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Answer 2

We know that Circumference of circle=2πr

⇒ Radius =28 ( Given)

⇒ Circumference = 2×22/7×28

⇒ Circumference = 176mm