A rectangle is 18 inches long and 12 inches wide.

What is the perimeter of this rectangle?

30 in.

36 in.

50 in.

60 in.

60 inches

Step-by-step explanation:

18+18+12+12

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