Area and Perimeter in Rectangles

What is the perimeter of this rectangle?

• 21 units

• 12 units

• 3 units

• None of the above.

What is the perimeter?

• 3 ft. 

• 6 ft. 

• 12 ft. 

• 18 ft. 

• The rectangles have the same area and perimeter.

• The rectangles have the same area, but different perimeters.

• The rectangles have the same perimeter, but different areas.

• The rectangles have different areas and perimeters.

The distance around an object is called the 

• area

• perimeter

What is the missing measurement? 

• 9 cm

• 18 in

• 18 cm

• 9 in 

What does perimeter mean?

• the amount of space inside a shape

• the distance around the shape

• the amount of space inside a shape divided by two

• half the distance around a shape

Farmer Bob's son built a track to walk his pet pig.  The track goes around the pig pen.  The pig pen is 15 feet long and 21 feet wide.  If the pig walks all the way around the track, how many feet did he walk?

• 72 feet

• 36 feet

• 36 square feet

A perimeter of a rectangle is 34 meters. The width is 4 meters. What would the length be?

• 17 m

• 13 m

• 15 m

Farmer Bob needs to build a fence for his chickens. He wants to build a fence around is 40 feet long and 20 feet wide. How many feet of fence does he need to buy?

• 800 feet

• 120 feet

• 60 feet

What is the perimeter of the fence?

• 25

• 30

• 35

• 40