Perimeter Find the Unknown Length

Mrs.Thompson uses a ruler to draw a square. The perimeter of the square is 20 centimeters. What side length does the square have (what does "s" equal)?

• s=20

• s=80

• s=4

• s=5

What is the unknown side (R) if the perimeter is 30 feet?

• R= 7 ft

• R= 6 ft

• R= 30 ft

• R= 11 ft

The rectangle below has a perimeter of 60. Find the lengths of the unknown side. That is, find S.

• S= 20

• S= 40

• S= 10

• S= 15

What is the length of the missing side (x) if the perimeter is 34?

• x= 10

• x= 9

• x= 11

• x= 8

What is the perimeter of this rectangle?

• 3 units

• 5 units

• 15 units squared

• 16 units

What is the perimeter of this rectangle?

• P= 11 cm

• P= 22 cm squared

• P= 22 cm

• P= 24 cm squared

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.

The distance around an object is called the 

• area

• perimeter