Algebra

A square and an equilateral triangle have the same perimeter.Each side of the triangle is 5 inches longer than each side of the square. What is the perimeter of the square.

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  1. side of square --- x
    side of triangle = x+5

    so 4x = 3(x+5)
    4x = 3x + 15
    x = 15

    perimeter of square = 4x = 60

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  2. The perimeter of an equilateral triangle is 5inches more than the perimeter of a​ square, and the side of the triangle is 4inches longer than the side of the square. what is The side of the triangle.

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