Wendy is building a set for a school play. She is putting up a fence around a rectangular plot of fake grass measuring 3 feet by 5 feet. She needs a fence post every foot. How many posts does she need?
P = 2l + 2w
To determine the number of fence posts Wendy needs, we need to calculate the perimeter of the rectangular plot. The perimeter is the total length around the shape, which in this case is the sum of all four sides.
Given that the length of the plot is 3 feet and the width is 5 feet, we can calculate the perimeter by using the formula:
Perimeter = 2 * (length + width)
Substituting the given dimensions into the formula, we have:
Perimeter = 2 * (3 + 5)
Perimeter = 2 * 8
Perimeter = 16 feet
Since Wendy needs a fence post every foot, she will require a total of 16 posts.