Area Problems
A man walked diagonally across a square plot. Approximately what was the percent saved by not walking along the edges?

20%
40%
10%
30%

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Area Problems
If the area of an equilateral triangle is x and its perimeter is y, then which one of the following is correct?

y2 = 432 x2
y4 = 432 x2
None of these
y4 = 216 x2

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