Hancock building dimensions. the top of the john handcock building in chicago is a rectangle whose length is 60ft more than width. the perimeter is 520 ft. find the width and the length of the rectangle. find the area of the rectangle.

Rectangle shape.
Length = x + 60 ft
Width = x
Perimeter = 520

Perimeter = 2(L+W)
520 = 2(x+60) + 2(x)
520 = 2x + 120 + 2x
520 = 4x + 120
520 - 120 = 4x
400 = 4x
400/4 = x
100 = x

Length = x + 60 = 100 + 60 = 160 ft
Width = x = 100 ft

Area = Length * Width
A = 160ft * 100ft
A = 16,000 ft²

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