3.7B Perimeter End of Unit Assessment

1. Felix drew the figures shown below.

Which list shows all of the figures that have a perimeter of 54 millimeters?

(Hint: Perimeter = plus +) add all sides

• Figures 2, 3, and 4

• Figures 2 and 4

• Figures 1 and 3

• Figures 1, 2, and 4

The side lengths of a rectangular mirror are shown below in inches.

What is the perimeter of the mirror in inches?

• 54 in.

• 90 in.

• 108 in.

• 72 in.

3. A square has a perimeter of 24 inches.  Each side of the square is the same length.

What is the length of one side of the square in inches?

• 5 in

• 96 in

• 12 in

• 6 in

4. Cam is putting a rectangular fence around her garden and needs to know the perimeter.  The length of the garden is 12 feet and the width is 10 feet.  What is the perimeter of the garden?

• 22 feet

• 2 feet

• 40 feet

• 44 feet

5. The perimeter of the figure below is 60 centimeters.  What is the length of the missing side?

• 23 cm

• 37 cm

• 21 cm

• 20 cm

6. The lengths of four sides of a polygon are shown.  The perimeter of the polygon is 40 units.  What is the length of the missing side?

• 30 units

• 8 units

• 10 units

• 12 units

7. A triangular sign has a perimeter of 30 centimeters. Two of the sides are each 12 centimeters long. What is the length of the third side? (Hint: Perimeter = plus + add slides)

• 6 cm

• 42 cm

• 12 cm

• 16 cm

8. Blake’s journal has a square cover with the side length shown.

What is the perimeter of Blake’s journal cover in centimeters?

• 104 cm

• 52 cm

• 100 cm

• 74 cm