A building in a city has a rectangular base. The length of the base measures 60 ft less than twice the width. The perimeter of this base is 870 ft. What are the dimensions of the base?

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

sorry i need the points

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