Question

A circular pie has an area of 706.5 cm2. What is the radius of

the pie?
A)225cm
B)30cm
C)15cm
D)112.5

Answer 1

`\large\boxed{\text{C}).\,15\,\text{cm}}`

Explanation:

In this question, we're trying to find what the radius of the circular pie is.

In this question, we know that the area of the pie is 706.5 cm²

We can use the area to find our radius.

We would use the formula
`r=\sqrt(A)/(\pi)` to find the radius.

R= radius

A = Area

Your equation should look like this:

`r=\sqrt(706.5)/(\pi)`

Now, you will solve.

`r=\sqrt(706.5)/(\pi)\\\\\text{You can make it simpler by turning}\, \pi\,\text{into} 3.14\\\\r=\sqrt(706.5)/(3.14)\\\\\text{Divide 706.5 by 3.14}\\\\r=\sqrt225\\\\\text{Now, get the square root of 225}\\\\r=15`

When you're done solving, you should get 15.

This means that the radius of the pie is 15 cm.

I hope this helped you out.

Good luck on your academics.

Have a fantastic day!