Question

What is the circumference of the circular disc of radius 21.7 cm ?
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Answer 1

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C≈136.35cm

Unit Conversion:
r=21.7cm
Solution
C=2πr=2·π·21.7≈136.34512cm

Answer 2

Answer:

Circumference is 136.4cm

Step-by-step explanation:

Circumference = 2$\pi$r

= 2 x 22/7 x 21.7

= 136.4cm

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