Perimeter and Unknown Side Lengths

Jeff is making a poster for a car wash for the Campout Club. What is the perimeter of the poster?

• 8 ft

• 3 ft

• 6 ft

• 4 ft

A rectangle has side lengths of 8 inches and 10 inches. What is the perimeter of the rectangle?

• 28 inches

• 18 inches

• 32 inches

• 36 inches

The rectangle has a missing side labeled b cm. The perimeter of the shape is labeled inside. Find the unknown side length for the shape.

• 9 cm

• 6 cm

• 15 cm

• 30 cm

Mrs. Smith puts food on a rectangular table. The perimeter of the table is 18 ft. The width of the table is 3 ft. What is the length of the table?

• 6 ft.

• 3 ft.

• 18 ft.

• 9 ft.

What is the length and width, and the area of a shape that has a perimeter of 12 centimeters?

• L = 1 cm., W = 5 cm, A = 5 sq. cm.

• L = 2 cm., W = 4 cm, A = 8 sq. cm.

• L = 3 cm., W = 3 cm, A = 9 sq. cm.

• All of the answers are correct.

Joe puts two squares together to make a rectangle. What is the perimeter of the new rectangle when the sides of the squares are 8 inches?

• 48 in.

• 33 in.

• 64 in.

• 8 in.

Mr. Cooper builds a fence to make a rectangular horse stall. The stall is 5 meters long and 7 meters wide. How many meters of fence does Mr. Cooper use? Which equation shows how to find the answer?

• 5m + 7m = 12 m

• 5m x 7m = 35 sq. m

• (5m + 5m) + (7m + 7m) = 24 m

• 2 x (5 x 7) = 70 m

Mrs. Smith draws a regular pentagon and labels a side length as shown below. Find the perimeter of Mrs. Smith's pentagon.

• 28 cm.

• 14 cm

• 42 cm

• 35 cm.

Sue draws a square with side lengths of 8 cm. What is the perimeter of the square?

• 64 cm.

• 32 cm.

• 16 cm.

• 8 cm.

Jane traces a regular pentagon on her paper. Each side measures 5 inches. She also trace a regular hexagon on her paper. Each side also measures 5 inches. Which shape has a greater perimeter?

• The pentagon

• The hexagon

• They are equal.

• It is impossible to know.