Look at the circle in the figure:
The diameter of the circle is 13.
What is its area?
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Look at the circle in the figure:
The diameter of the circle is 13.
What is its area?
First, let's remember what the formula for the area of a circle is:
The problem gives us the diameter, and we know that the radius is half of the diameter therefore:
We replace in the formula and solve:
42.25π
A circle has a circumference of 31.41.
What is its radius?
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