Question

If a circle has a diameter of 10cm and circumference of 31.4 cm,how would you write a ratio to determine the value of pi

Answer 1

3.14

Explanation:

Circumference of a circle is given by

`C=\pi d` and making
`\pi` the subject then

`\pi=\frac {C}{d}`

Here d is the diameter and C is the circumference.

Given that d=10cm and C=31.4 then

`\pi=\frac {31.4}{10}=3.14`