Ask Question
6 September, 19:20

The perimeter of a rectangle is 42 cm. The longer side has length of 7 cm more than the shorter side. Find the length of longer side

+4
Answers (2)
  1. 6 September, 19:31
    0
    So to solve, make an equation (x being the shorter side)

    2x+2 (7+x) = 42

    So just solve from here.

    2x + 14 + 2x = 42

    4x=28

    x=7

    So the shorter side is 7, and the longer side is 14.
  2. 6 September, 19:44
    0
    To find perimeter, we use this equation.

    2L+2W=42

    Let's say the longer side is the length.

    L=W+7

    Let's plug that in for L.

    2 (w+7) + 2w=42

    2w+14+2w=42

    Add like terms.

    4w+14=42

    Subtract 14 from both sides.

    4w=28

    Divide.

    28:4=7=W

    The shorter side is 7, which means the longer side is 14 cm.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The perimeter of a rectangle is 42 cm. The longer side has length of 7 cm more than the shorter side. Find the length of longer side ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers