Area and Perimeter Concepts

• Jeff and Jenny in the book, “Bigger, Better, Best!” compared the sizes of their rooms and their windows, by finding:

• • The Area:

  • The space inside the shape

• • The Perimeter:

  • The total distance around the outside of the shape

The formula for Area is:

• Area =

  Length X Width

• Area=

  Side + Side + Side + Side

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

• You find Perimeter by:

• • ⁺

  • Adding up the lengths of all the sides.

• x

  • Multiplying the length times the width. 

Tags

CCSS.3.MD.D.8

You find the Area by:

• • Measuring the space inside the shape.

• • Finding the distance around the outside of the shape. 

• Which of these is measured in SQUARE units?

• • Area:

  • the space inside the shape.

• • Perimeter:

  • the total distance around the outside of the shape.

• A rectangular playground is 15 feet long and 10 feet wide.
  What measurement would you use if you wanted to build a fence around the outside of the playground?

• Perimeter

• Area

• A rectangular playground is 15 feet long and 10 feet wide.
  What measurement would you use if you wanted to buy rubber flooring material to cover the entire space inside the playground?

• Perimeter

• Area

A rectangular picture frame is 3 inches wide and 2 inches long.

What is the Perimeter?

Don't forget your unit of measurement.

• 10 in.

• 6 in²

• 10

• 6 in

Tags

CCSS.4.MD.A.3

A rectangular picture frame is 3 inches wide and 2 inches long.

What is the Area of the picture frame?

Don't forget to include the unit of measurement!

• 6

• 6 in²

• 6 in

• 10 in

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

• Your pig pen in Minecraft is 10 feet long and 8 feet wide. 

How many feet of fencing do you need to go around the outside of your pig pen?

• 18 feet

  of fencing

• 36 feet

  of fencing

• 80 feet

  of fencing

• 80 square feet

  of fencing

Tags

CCSS.4.MD.A.3