Question

A U.S. dime has a diameter of about millimeters. What is the area of one side of a dime to the nearest square millimeter? Use as an approximation for .The area of one side of a U.S. dime is approximately blank square millimeters.The solution is

Answer 1

A US dime has a diameter of 18 millimeters. That makes the radius 9 millimeters, because

`\begin{gathered} \text{radius}=\frac{\text{diameter}}{2} \\ \text{radius}=(18)/(2) \\ radius=9 \end{gathered}`

The area of the dime (which is circular in shape) is given by the formula;

`\begin{gathered} \text{Area of a circle} \\ A=\pi* r^2 \\ r=9,\pi=3.14 \\ A=3.14*9^2 \\ A=254.34mm^2 \end{gathered}`

The area of one side of the dime is 254 square millimeters (approximated to the nearest square millimeter)