exam Maths Puzzle Numerical Ability

Hello,
if it takes 600 feet of fence to enclose a rectangular lot that is 132 feet wide, then how deep is the lot?
Tks.

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exam Other Question

hi i cant seem to work out how to get the formulas that contains n.
terms 1 2 3 4 5 6 7 8 9 n
sequences 10 40 90 160 250 36
(x-2)²=-16