If you could break down the sums for me it would be much appreciated thank you.
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A = pi*R^2
A = .25*.25 * 3.14 = .196 square miles
You appear to be off by a decimal
A = .25*.25 * 3.14 = .196 square miles
You appear to be off by a decimal
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I don't know how you could think it would be more than (0.5 mi)² = 0.25 mi²...