Missing Side for Perimeter

Find the unknown side length if the perimeter is 30 cm.

• 5 cm

• 4 cm

• 8 cm

• 10 cm

Find the unknown side length if the perimeter is 29 cm.

• 10 cm

• 8 cm

• 6 cm

• 7 cm

Find the unknown side length if the perimeter is 89 inches.

• 15 in.

• 17 in.

• 20 in.

• 13 in.

This shape has a missing side length labeled with a letter. The perimeter of the shape is labeled inside. Find the unknown side length for each shape.

This shape has a missing side length labeled with a letter. The perimeter of the shape is labeled inside. Find the unknown side length for each shape.

A rectangular pizza has a perimeter of 24 inches. If the length is 8 inches, what is the width?

• 4 inches

• 6 inches

• 8 inches

• 3 inches

What is the missing side length?

• 8 meters

• 7 meters

• 5 meters

• 6 meters

What is the perimeter?

• 36 cm

• 32 cm

• 45 cm

• 27 cm

What is the perimeter?

• 156 feet

• 158 square feet

• 256 feet

• 258 square feet

Farmer Bob needs to build a fence for his chickens.  The space 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

• 80 feet