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A U.S. quarter has a diameter of about 24 millimeters. What is the area of one side of a quarter to the nearest square millimeter? Use 3.14 as an approximation for .The area of one side of a U.S. quarter is approximately _____square millimetersThe Solution is ___________

User Nightwatch
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1 Answer

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Step 1

Since a U.S quarter is a circular coin write the expression for the area of a circle


\text{The area of a circle = }\pi r^2

Where


\begin{gathered} \pi=3.14 \\ Radius=\frac{\text{diameter}}{2}=(24)/(2)=12\operatorname{mm} \end{gathered}

Step 2

Find the area of 1 side of a quarter to the nearest square mm


\begin{gathered} A=\text{ 3.14}*12^2 \\ A=452.16\operatorname{mm} \end{gathered}

Hence, to the nearest square millimeter the area of one side of the quarter = 452 square millimeter

User Petro Gromovo
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