Area Problems
The ratio of the radii of two circle is 1:3 the radio of their areas is?

1:6
1:3
1:9
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.

64 cm
32 cm
60 cm
8 cm

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