Question

What is the best approximation for the area of a circle with a diameter of 13 meters?

Use 3.14 to approximate pi

Answer 1

We know that the area of a circle is represented by the equation:

`A=\pi r^(2)`

And we know that the diameter of a circle is twice the radius:
`d=2r`

So if we know that the diameter is 13m, we can solve for the radius:

`13m=2r` -->
`r=6.5m`

Then we can plug in this radius into the equation for the area of a circle, using 3.14 to approximate the value of pi:

`A=(3.14)(6.5)^(2)`

`A=(3.14)(42.25)`

`A=132.665m^(2)`

So now we know that the area of the circle is 132.665 square meters.