Question

What is the best approximation for the circumference of a circle with a radius of 45 cm? Use 3.14 to approximate pi

70.65 cm

141.3 cm

282.6 cm

6358.5 cm


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Answer 1

282.6 that is the pie

Answer 2

Circumference of circle is 282.6 cm .

Explanation:

Formula

`Circumference\ of\ a\ circle = 2\pi r`

Where r is the radius of the circle .

As given

Radius of a circle is 45 cm .

`\pi = 3.14`

Putting values in the above

`Circumference\ of\ a\ circle = 2* 3.14* 45`

= 282.6 cm

Therefore the circumference of circle is 282.6 cm .