Answer:
Hello! The answer is 15 in.
Step-by-step explanation:
The formula for the perimeter of a rectangle is 2l + 2w. We can substitute our w-value since it's provided for us:
2l + 2(3) = 36
Now, we can solve the equation:
2l + 6 = 36
-6. -6
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2l = 30
-- --
2 2
l = 15 in
