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12 votes
Find the area of the radius Round to the nearest whole number

Find the area of the radius Round to the nearest whole number-example-1
User Nortron
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3.1k points

1 Answer

28 votes
28 votes

Explanation:

The formula of the area of a circle is A = πr² where A is the area and r is the radius of the circle.

To find the radius, you can follow the steps below:

Step 1) Substitute the value of the area (given) in the equation.


\begin{gathered} A=\pi\cdot r^2 \\ 9409\pi=\pi\cdot r^2 \end{gathered}

Step 2) Isolate r and solve the square root.


\begin{gathered} r^2=(9404\pi)/(\pi) \\ r^2=9404 \\ \sqrt[]{r^2}=\sqrt[]{9404} \\ r=97 \end{gathered}

Answer: The length of the radius is 97 centimeters.

User Tadashi
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