Question

Find the area of the circle with the following dimension diameter = 4 cm

Answer 1

`A = 12.56 cm^(2)`

Explanation:

When you want to find area out of diameter. These are the steps you follow:

1. Convert diameter to radius

2. Solve for area

First step:

When you need to convert diameter to radius, you just need to divide by 2

`d = 4cm / 2cm`

`==> 2cm`

Second step:

Use formula
`A = \pi * r^(2)`

A =
`\pi * 2cm^2`

A =
`\pi * 4cm`

A=
`12.56cm`