Question

The diameter of a circle is 8cm. Find its circumference to the nearest tenth.

Answer 1

`C = 25.1 \text{ cm}`

Explanation:

We can find the circumference of the circle by plugging the given radius value 8 cm into the formula:

`C = \pi d`

Note: This formula can also be written as
`C = 2\pi r` because
`2r = d`.

↓ plugging in the given radius

`C = 8\pi \text{ cm}`

↓ rounding to the nearest tenth

`\boxed{C = 25.1 \text{ cm}}`