exam Maths Puzzle Numerical Ability

water volumes increases 9% when it freezes.If 400 cm cube of water are frozen,hw much will the volume increase?what will be the volume of the ice?

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The width of a romm is 3 feet shorter than its length. The perimeter of the room in 62ft. What is the length and width? CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM:

CONSIDER d(x) = (x + 2)^3 + 3; WHAT IS THE NEW EQUATION FOR d(x) IF IT IS 4 TIMES LARGER?