Perimeter With a Missing Side

Find the missing side length! What is the perimeter?

If the perimeter of the shape is 34 units, what is the missing side?

Ray found the perimeter of the window in his bedroom to be 12 feet. If the length of the window is 4 feet long, what is the width?

Emilia is painting a triangular picture frame. The perimeter is 30 inches. If one side is 13 inches long and another side is 5 inches long, what is the length of the other side of the picture frame?

A piece of wire is bent to form a rectangle. If the perimeter of the rectangle is 60 meters and the length is 20 meters, what is the width of the rectangle?

• 10 meters

• 15 meters

• 20 meters

• 5 meters

Find the missing side length of a rectangle if the perimeter is 54 cm, the length is 15 cm, and the width is known to be less than the length.

• 12 cm

• 9 cm

• 24 cm

• 18 cm

A square playground has a perimeter of 48 meters. What is the length of one side of the playground?

• 12 meters

• 24 meters

• 8 meters

• 16 meters

If the perimeter of a rectangle is 50 metres and the length is 15 metres, what is the width?

• 5 metres

• 10 metres

• 15 metres

• 20 metres

If the perimeter of an equilateral triangle is 21 cm, what is the length of one side?

• 7 cm

• 14 cm

• 21 cm

• 3 cm

A rectangular field is 15 meters long and has a perimeter of 50 meters. What is the width of the field?

• 10 meters

• 20 meters

• 5 meters

• 25 meters