Question

What is the area of a circle with a diameter of 10ft? Use 3.14 for pi.

Answer 1

B) 78.5

Explanation:

The formula for the area of a circle is :
`\pi*radius^(2)`

To work this out you would first need to divide the diameter of 10 by 2, which gives you 5. This is because in order to calculate the area you would need to work out the radius. The radius of a circle is half of the diameter.

Then to work out the area you would multiply pi by the radius of 5 squared, this gives you 78.54 square feet.

1) Divide 10 by 2.

`10/2=5\\`

2) Multiply pi by the radius squared.

`\pi*5^(2)=78.54 feet^(2)`