Answer:
Mr. Herzog will need 4 pieces of the chair rail
Step-by-step explanation:
* Lets explain how to solve the problem
- A rectangular family room is 18 feet long and 14 feet wide
- Mr. Herzog has pieces of chair rail that are each 16 feet long that he
wants to install around the perimeter of the room
- We want to find how many pieces he will need
- The perimeter of any rectangle = 2l + 2w , where l is the length
and w is the width of it
∵ The length of the room is 18 feet
∵ The width of the room is 14 feet
∴ The perimeter of the room = 2(18) + 2(14) = 36 + 28 = 64 feet
- Now we can find the number of the pieces of the chair rail by
dividing the perimeter of the room by the length of a piece of
the chair rail
∵ The length of each chair rail is 16 feet
∵ The perimeter of the room is 64 feet
∴ The number of the pieces = 64 ÷ 16 = 4
∴ Mr. Herzog will need 4 pieces of the chair rail
