Question

If the circumference of a circle is 484 cm, what is the area and diameter

Answer 1

The area of the circle is approximately 18641.5 because you need to round to the nearest place value. The diameter of the circle is approximately 154.06.

Explanation:

Area=πr2

Circumference=2πr

Solving for Area

Area= C²/4 π = 484²/4·π ≈ 18641.50017

———————————————————————————

Circumference =2πr

Diameter= πr

Solving for Diameter

Diameter= C/π = 484/π≈ 154.06198

Answer 2

`18641.50 \: cm^2\\154.06 \: cm`

Explanation:

`C=\pi d`

`484=\pi d`

`(484)/(\pi ) =d`

`d=154.06198`

`A=\pi r^2`

`\pi ((d)/(2)) ^2`

`\pi ((154.06198)/(2)) ^2`

`A=18641.49898`