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The width of a rectangular slab of concrete is 16 m less than the length. The area is 80m^2Part 1 of 3(a) What are the dimensions of the rectangle?The length of the slab is?

The Width Of A Rectangular Slab Of Concrete Is 16 M Less Than The Length The Area Is 80m2Part 1 Of 3a What Are The Dimensions Of The RectangleThe Length Of The class=

Answer :

width = w

length = l

w = l - 16

area = w*l

(l - 16)*l = 80

l^2 - 16l = 80

l^2 - 16l - 80 = 0

(l + 4)(l - 20) = 0

then length = 20

w = 20 - 16 = 4

the width is 4

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