Area Problems
A tank is 25m long 12m wide and 6m deep. The cost of plastering its walls and bottom at 75 paise per sq m is

Rs. 258
Rs. 358
Rs. 558
Rs. 458

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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 = 216 x2
y4 = 432 x2
None of these

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Area Problems
The perimeter of two squares are 68 cm. Find the perimeter of the third square whose area is equal to the different of the areas of these two squares.

32 cm
64 cm
8 cm
60 cm

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