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Perimeter of a Rectangle, Two Unknowns

Q: The perimeter of a rectangle is 74 inches. If the width is doubled and the length is halved, the new rectangle will have a perimeter is 76 inches. What are the dimensions?

A: You have two unknowns, l=length and w=width, so you need two equations.

Recall that perimeter of a rectangle is P . . . → Read More: Perimeter of a Rectangle, Two Unknowns

Perimeter of Triangle Word Problem

Q: The longest side of a triangle is four inches longer than the shortest side. The remaining side is two inches longer than the shortest side. The perimeter of the triangle ( the sum of the lengths of the sides) is 24 inches. what is the length of the longest side?

A: Let x . . . → Read More: Perimeter of Triangle Word Problem

Rectangular mural, perimeter word problem

Q: The height of a rectangular mural is twice its width. Its perimeter (the sum of the measures of its sides) is 36 feet. What is the width and the height of the mural?

A: Let h=height Let w=width Let P=Perimeter

Height is twice the width: h = 2w The formula for perimeter . . . → Read More: Rectangular mural, perimeter word problem