Calculating Perimeter of Shapes

What is perimeter?

• The sum of the sides of a geometric figure
• The space inside of a shape

• The number of sides there are

• Length x width

How do you solve for the perimeter?

• Multiply the length times the width

• Multiply all of the sides

• Add all of the sides

• Count the number of sides

What 2 strategies can you use to solve for perimeter if ALL SIDES ARE THE SAME LENGTH?

• multiply the length by the number of sides

• add the side lengths together

• multiply two of the side lengths and add the rest

• count the number of sides you have by 5

What does John need to do to figure out how much white tape he will need?

• Multiply the top and the bottom lengths

• Multiply the side length by 4

• Find the perimeter of the pool by adding each side

• Find the perimeter of the pool by walking around it

Pretend this is the room you just measured. What is the perimeter?

• 3 ft

• 70 ft

• 17 ft

• 34 ft