Question

What is the exact circumference of a circle with a radius of 17 mm?

Answer 1

The exact circumference of a circle with a radius of 17 mm is $34 \pi$ or 106.76 mm

Solution:

Given that,

A circle with radius 17 mm

To find: circumference of circle

The circumference of circle is given as:

$C = 2 \pi r$

Where, "r" is the radius of circle

Substitute r = 17 mm

$C = 2 \times \pi \times 17\\\\C = 34\ \pi\\\\C = 34 \times 3.14\\\\C = 106.76$

Thus the exact circumference of a circle with a radius of 17 mm is $34 \pi$ or 106.76 mm