D Equals 9.8 mi

Find the Area to the nearest 10th with pi being 3.14

Assuming D is the diameter you are finding the area of a circle so the formula is A=(3.14)r


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A is area
(Pi) is 3.14
r is radius of the circle to the second power (or squared)
Since the problem gives you diameter, you must divide that number in half to get the radius. 9.8/2=4.9

The radius is 4.9mi.

Now set up the problem.
Using order of operations, solve each set of parentheses.
Now multiply the two numbers.
A=75.3914square miles
Round to the nearest 10th.
A=75.39 square miles

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