The diameter of a circle is 18 miles. What is the circle's area?
Use 3.14 for .

254.34

Step-by-step explanation:

The area of a circle = pi * r^2 where pi = 3.14 and r = radius of the circle, which is the length of any line drawn from the center of the circle to the circle’s edge.

The diameter of a circle is the distance of a line from one point on the edge of the circle to another point on the edge of the circle, passing through the center. It’s the longest line you can draw from one edge of a circle to another edge. It is equal to 2r.

So here, 2r = 18 and r = 9. Therefore, we plug the value for r into the area equation above and get:

A = pi * r^2 = 3.14*(9^2) = 3.14*81 = 254.34

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