Perimeter With a Missing Side

Find the perimeter.

• Perimeter = 80 units

• Perimeter = 84 units

• Perimeter = 74 units

• Perimeter = 85 units 

A triangular sign has a perimeter of 70 inches. Two of the sides are each 19 inches. What is the length of the 3rd side in inches?

• 32

• 89

• 51

• A triangle has 3 sides.

A triangular puzzle has a perimeter of 99 centimeters. Two of the sides are each 37 centimeters long. How long is the missing side?

• 136 cm

• 62 cm

• 25 cm

• 25 inches

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

What is the length of the missing side if the perimeter is 44m?

• 12m

• 22m

• 44m

• 2m

This rectangle has a perimeter of 34 cm., find the height

• 11 cm.

• 13 cm.

• 22 cm.

• 5.6 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.