Area Problems
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:

40%
44%
42%
46%

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

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