On an areial photograph, the surface of a pond appears as a circular region of radius 7/16 inch.If a distance of 1inch on the photograph correspondence to a actual distance of 2miles.Which of the following of closest estimate of actual surface of the area of pond,in square miles?

On an areial photograph, the surface of a pond appears as a circular region of radius 7/16 inch.If a distance of 1inch on the photograph correspondence to a actual distance of 2miles.Which of the following of closest estimate of actual surface of the area of pond,in square miles? Correct Answer 2.4

As 1 inch = 2 miles, then 7/16 inches = 2*7/16 = 7/8 miles. So actual radius is 7/8 miles.  ∴ Area =  π * r^2 = 22/7 * 7/8 * 7/8 = 77/32 = ~2.4 ans: 2.4
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