Answer:
60 inches
Step-by-step explanation:
In a rectangle, there are 2 pairs of congruent sides. Therefore, the perimeter of a rectangle can be found using:
p=l+l+w+w
We know that the length is 18 and the width is 12, so we can substitute 18 in for l, and 12 in for w.
p=18+18+12+12
Add all the numbers together
p=60
So, the perimeter is 60 inches
