SOLUTION: The perimeter of a rectangular field is 168 feet, the field is 36 feet wide. How long is the field?

Question 866635: The perimeter of a rectangular field is 168 feet, the field is 36 feet wide. How long is the field?

Found 2 solutions by JulietG, jim_thompson5910:
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
2L + 2W = 168
w = 36
Substitute the value of W into the first equation.
2L + 2(36) = 168
2L + 72 = 168
Subtract 72 from each side
2L = 96
Divide each side by 2
L = 48
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
P = 168 (given perimeter)
W = 36 (given width)
L = unknown (we'll leave it as L for now)

P = 2*(L+W) ... perimeter of rectangle formula

168 = 2*(L+36) ... plug in L = 36 and P = 168, then solve for L (ie isolate it)

168 = 2*L+2*36

168 = 2L+72

168-72 = 2L

96 = 2L

2L = 96

L = 96/2

L = 48

The length of the field is 48 feet
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