Question

What is the area of a circle with a diameter of 13.2 cm?

Use 3.14 for pi and round your final answer to the nearest hundredth.

Answer 1

The area of the circle is 136.78 cm².

Step by step explanation:

The area of a circle is

`A=\pi r^2` ....(1)

Where, r is the radius of the circle.

The diameter is two of is radius.

`d=2r`

It is given that the diameter of circle is 13.2 cm.

`13.2=2r`

`r=(13.2)/(2)=6.6`

Substitute r=6.6 and π=3.14 in equation (1).

`A=3.14* (6.6)^2`

`A=136.7784`

`A=136.78`

Therefore the area of the circle is 136.78 cm².