book Maths Puzzle Numerical Ability

9a2+42a+49 what are the two numbers

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The length of a rectangle is twice the width of the rectangle.
The length of a diagonal of the rectangle is 25 cm.

Work out the area of the rectangle.
Give your answer as an integer. Hi, The question is a Farmer has Pigs & Chickens on his farm of which the sum of all the pigs & chickens legs equals 101. How many Pigs and how many chickens are on his farm.