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### Course: Grade 6 (VA SOL)>Unit 9

Lesson 4: Applying area & perimeter

# Perimeter word problem: tables

Lindsay solves a perimeter word problem that involves combining two perimeters. Created by Lindsay Spears.

## Want to join the conversation?

• why is there question so easy but ours is hard?
• dunno
• i tried that. it didn't work. what else can i do?
• the comments under every video are the reason for the growth of khan academy
• This made it look so easy but it's not. so it means we gotta try our best
• This is a re-pasted answer to a similar question that has an answer similar to this response below

Allow me to aid you in understanding perimeter and make is easier!. The perimeter of an object, adding on to the answer before, is the total added length of all of a shape's sides. Take below as an example:

``               9    ⠒ ⠒ ⠒ ⠒ ⠒ ⠒ ⠒ ⠒ ⠒ ⠒    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆ 7    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆     ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆    ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢ ▢  ⠆                           ``

As we can see, the rectangle above is 7 units tall and 9 units wide, to find the perimeter, we need to add up all four sides pf this rectangle. Because we know that a rectangle has two groups of two equal sides, we know the side lengths are `9, 9, 7, 7`. Now, let's add them!

`` ³  9  9   7+ 7———— 32``

The answer is *`32`*, so we can conclude that the perimeter of the rectangle above is 32 units.

(!) — However, one thing to note is that we do not square the units when solving and writing down perimeter as nothing is being multiplied, only added.

Hope that helps!
• Did we assume that the two parts were evenly divided? Or was there a specific way in which you determined that each part is 1 meter long?
• We did that because they look so much alike and that's a rule of a rectangle- opposite sides are the same length
• What happened to sal 3: