Dimensions 2

[Guest]

Variation on the rectangle/square problem:

The lower square base of the Washington Monument has a side 21 ft. more than the upper square base. Area of the lower base is 1869 sq. ft. more than the upper base. Determine dimensions of each square.

Area = length * width

Let x = lower base
Let y = upper base

Lower:

Side: x + 21 Side: x + 21 Area: (x + 21) (x + 21)

Upper:

Side: y Side: y Area: y^2

y^2 = (x + 21) (x + 21) + 1869

y^2 = x^2 + 21x + 21x + 441 + 1869

y^2 = x^2 + 42x + 2310

Unsure from here. Thanks.

[Guest]

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[Guest]

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