Algebra
posted by sandy .
Please show me step by step if possible:
Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ftÂ².
The length (longer side) equal ___ft and width (shorter side) equal ____ft.

P = 2L + 2W
Possible dimensions:
3 by 11
4 by 10
5 by 9
6 by 8
7 by 7
Which of those dimensions will give an area of 45 sq. ft?