Question

if the radius of the circle is 22cm, find the circumference​

Answer 1

Answer:

$c = 2 \: \pi \: r \\ \\ = 2 \times 22 \times \frac{22}{7} \\ \\ = \frac{968}{2}$

Answer 2

Answer:

circumference of a circle

$= 2\pi \: r \\ = 2 \times \frac{22}{7} \times 22 \\ = 968 \div 7 \\ = 138.28$

or

$= 138.3$

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