Area Problems
The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

25% increase
50% decrease
75% decrease
50% increase

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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?

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

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