Question

How to calculate the circumference of a circle whose radius is 12cm
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Answer 1

C ≈ 75.4 cm

Explanation:

`2\pi r`

2 × 3.14 × 12

C ≈ 75.4 cm

Answer 2

75.4cm

Explanation:

To calculate the circumference, you need the radius of the circle:

Multiply the radius by 2 to get the diameter.

Multiply the result by π, or 3.14 for an estimation.

That's it; you found the circumference of the circle.