Question

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

8.5 mm
17* mm
34 mm
68 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 * \pi * 17\\\\C = 34\ \pi\\\\C = 34 * 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