Post a New Question

algebra

posted by on .

The perimeter of a rectangle is 94 ft, and the area of the rectangle is 90ft ^2. What are the dimensions of the rectangle?

  • algebra - ,

    2p+2l = 94
    p+l = 47
    l = 47-p

    pl = 90
    p(47-p) = 90
    -p^2 + 47p - 90 = 0
    p^2 - 47p + 90 = 0
    (p-45)(p-2) = 0

    p = 45 or p = 2

    if p=45 , l = 47-45 = 2
    if p = 2, l = 47-2 = 45

    the rectangle is 2 ft by 45 ft

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question