exam Maths Puzzle Numerical Ability

The length of a rectangular swimming pool is twice its width. The pool is surrounded by a cement walk 4ft wide. If the area of the walk is 748ft^2, determine the dimensions of the pool?

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exam Other Question
Please hepl solve this problem, vertex (2, 1), ends of the latus rectum (-1, -5) and (-1,7).

(y-k)^2= -4c(x-h)

(y- 1)^2= -4*3(x- 2)

y^2-2y+1= 12(x-2) Solve

(4x + 5 / 3) + 2 = x/7