Algebra

A rectangular dog pen has a perimeter of 10 yd and a width of 2yd. What is its area?

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asked by Sam
  1. Rectangle formulas:

    Perimeter = 2l + 2w
    Area = lw

    Note: l = length of rectangle and w = width of rectangle

    Let's look at what you know:
    Perimeter = 10 yds
    Width = 2 yd

    Therefore:
    Perimeter = 2l + 2w
    10 = 2l + 2(2)
    10 = 2l + 4
    Subtract 4 from both sides.
    6 = 2l
    Divide both sides by 2.
    3 = l

    Now you have length and width.
    Area = lw = (3)(2) = 6 sq yds

    I hope this helps.

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