exam Maths Puzzle Numerical Ability

If the sides of a square are decreased by 3 cm, the area is decreased by 81 cm^2. What were the dimensions of the original square?

Thank you.

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exam Other Question
Calculate and round to two decimals:

This is a division problem.

A = 8,000ญญญญญญ/
2 – (.03)(37/284) Write an equation of the line through the point (a)parallel to the given line and (b)perpendicular to the given line:

a)point (4, -1) line x=3

b)point (-2, 5) line y=-4

Th