Question

What is the approximate area of a dart board with a diameter of 18 inches? Use 3.14 for π. Round to the nearest hundredth if necessary.

QUICK

Answer 1

A≈254.34

Explanation:

The radius is half of the diameter, so in this case the radius is 9 inches.

r=9 inches

The formula for finding the radius of a circle is: A = r²

When we substitute we come up with:

A= 3.14*9²

Then we square 9 and come up with 81

Substitute.

A=3.14*81

Multiply.

A=254.34

You do have to put an estimation sign in your final answer because you substituted 3.14 for π

Hope this helped<33

Answer 2

Area = pi*r^2

= 3.14 * 18^2

= 3.14 * 324

= 1.017.36 sq.inches