Area Problems
The diagonal of a rectangle is √41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:

9 cm
20 cm
41 cm
18 cm

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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
y4 = 216 x2
y2 = 432 x2
None of these

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