A Susan B. Anthony dollar coin has a diameter of 26.50 millimeters. What is the area of the coin to the nearest hundredth?
1 Answer
Jan 27, 2017
Explanation:
Coin's diameter is 26.50 millimetres
using the unit of measurement of
So its radius is
Area of a circle is
So the area is
Using a calculator this is: 551.54586....
For the nearest hundredth we have the cut off point:
The digit immediately to the right of the cut of point is classified as 5 or more. So the digit to the left of the cut off point is raised by 1 and all those to the right made into 0