We can find the perimeter of a rectangle by using the following formula:
perimeter = 2 × width + 2 × length
In the question, we are given the following data: the length of the rectangle is 12 in and the perimeter is 56. Let's substitute this into our formula!
56 = 2 × width + 2 × 12 Multiply first.
56 = 2 × width + 24 Now subtract 24 from both sides.
32 = 2 × width And finally, to find the width of the rectangle, divide both sides of the equation by 2.
16 = width (we can eventually switch sides in the equation).
