Perimeter with Missing Side Length

Front

What is perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you find the perimeter of a square?

Back

To find the perimeter of a square, multiply the length of one side by 4.

Front

If a square has a perimeter of 100 feet, what is the length of each side?

Back

25 feet

Front

How do you find the perimeter of a rectangle?

Back

To find the perimeter of a rectangle, add the lengths of all four sides or use the formula: P = 2(length + width).

Front

Cole's yard is 9 feet long and 5 feet wide. What is the perimeter?

Back

28 feet

Front

What is the formula for the perimeter of a rectangle?

Back

P = 2(length + width) or P = length + length + width + width.

Front

If the perimeter of a rectangle is 26 units, and one side is 9 units, what is the missing side length?

Back

4 units

Front

What is the perimeter of a shape with sides measuring 4 in., 4 in., 4 in., and 4 in.?

Back

16 in.

Front

If the perimeter of a rectangle is 30 units and one side is 10 units, what is the other side?

Back

5 units.

Front

What do you do if you know the perimeter but not one side length?

Back

You can use the perimeter formula to find the missing side length.