Question

a dime has a diameter of 17.91 millimeters. What is the area of the face of the dime? use 3.14 for π. Round to the nearest hundredth if necessary

Answer 1

The area of a circle is:

`A=\pi\cdot r^2`

As you have the diameter, use it to find the radius: the radius of a circle is equal to the half of the diameter:

Then, the area is: 251.80 millimeters