Question

Equations - Item 2829

The circumference (C) of a circle is 16 cm. Which formula can you use to find the
diameter (d) if you know that C = 3.14d?​

Answer 1

The formula is used to find the diameter of circle is:
`d = (C)/(3.14)`

The diameter of circle is 5.1 cm

Solution:

Given that,

Circumference (C) of a circle is 16 cm

The formula for circumference of circle when diameter is given is:

`C = \pi d\\\\\pi \text{ is a constant equal to 3.14}\\\\C = 3.14d`

Rearrange the formula to get "d"

Divide both sides by 3.14

`d = (C)/(3.14)`

The above formula is used to find the diameter of circle

Given that, circumeference = C = 16 cm

Substituting we get,

`d = (16)/(3.14)\\\\d = 5.095 \approx 5.1`

Thus diameter of circle is 5.1 cm