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If the length of a rectangle is four times as large as the width. its area is 100 square inches find the width and length of the rectangle?

I need help I can't seem to find this online anywhere to help me solve it

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SW-User

width: x
length: 4x

area: 100 sq.in.

area: width * length
= (x) * (4x)
= 4(x^2)

hence, 100 sq.in = 4(x^2)

or, 25 sq.in = (x^2)

or, 5 in = x

hence, width = 5 inches which would imply length = 5 * 4 = 20 inches

AcidBurn

@SW-User This!

SW-User

@AcidBurn thanks :)