SOLUTION: If the perimeter of a rectangle is 42 cm and the area is 90 square cm, then what are the dimensions of the rectangle?
Algebra ->
Rectangles
-> SOLUTION: If the perimeter of a rectangle is 42 cm and the area is 90 square cm, then what are the dimensions of the rectangle?
Log On
Question 1149168: If the perimeter of a rectangle is 42 cm and the area is 90 square cm, then what are the dimensions of the rectangle? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! If the perimeter of a rectangle is 42 cm and the area is 90 square cm, then what are the dimensions of the rectangle?
----------------
P = 2L + 2W = 42
L + W = 21
L*W = 90
---
Find a pair of factors of 90 with a sum of 21.
