Question

The circumference of a circle is 9.45cm.

Find the length of the diameter.
Give your answer rounded to 2 DP.​

Answer 1

D = 3 cm

Explanation:

Given that,

The circumference of a circle is 9.45cm.

We need to find the length of the diameter.

The formula for the circumference of a circle is given by :

`C=2\pi r`

We know that, Diameter = 2r

So,

`C=D\pi\\\\D=(C)/(\pi)\\\\D=(9.45)/(\pi)\\\\D=3\ cm`

So, the length of diameter is equal to 3 cm.