Area Problems
An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

2.02%
4.04%
2%
4%

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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?

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

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