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Math - Polygons and Quadrilaterals

A rectangle has a diagonal of length 125. If the ratio fo the length of the short side to the length of the long side of the rectangle is 7:24, what is the length of the shorter side of the rectangle?

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  1. Recall that the length of a diagonal of a rectangle can be calculated by,
    D^2 = W^2 + L^2
    or simply, we'll use the Pythagorean theorem.
    Substituting,
    125^2 = (7x)^2 + (24x)^2
    15625 = 49x^2 + 576x^2
    15625 = 625x^2
    x^2 = 25
    x = 5 (this is the multiplier for the ratio)

    Therefore, the shorter side (which is 7x) is equal to 7*5 = 35.

    Hope this helps~ :3

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