Area and Perimeter Review

A triangle has a perimeter of 15 units. Each side of this triangle is the same length. What is the length of one side of the triangle in units?

• 3 units

• 5 units

• 45 units

A triangular sign has a perimeter of 35 centimeters. Two of the sides are each 12 centimeters long. What is the length of the third side in centimeters?

• 11 cm

• 23 cm

• 47 cm

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

• Figures 2, 3, and 4

• Figures 2 and 4

• Figures 1, 3, and 4

What is the area of the BLUE model in square feet?

• 12 cm

• 18 cm

• 32 cm

The lengths of four sides of a polygon are shown in the diagram. The perimeter of the polygon is 35 units. What is the missing number in units?

• 5 units

• 28 units

• 65 units

What is the area of the rectangle below?

• 9 square units

• 24 square units

• 27 square units

Chandler counted the square tiles on a rectangular floor at his school. Each tile had an area of 1 square foot. On the floor there were 6 rows of tiles and 24 tiles in each row. What is the area of the floor in square feet?

• 30 square feet

• 144 square feet

• 168 square feet

Tyler counted the square tiles on the ceiling of his rectangular closet. The area of each tile is 1 square foot. The ceiling has 8 rows of tiles with 4 tiles in each row. What is the area of the ceiling of Tyler's closet in square feet?

• 4 square feet

• 12 square feet

• 32 square feet

What is the area of BOTH parts of the figure?

• 14 square feet

• 56 square feet

• 112 square feet

Rachel has 50 inches of ribbon. She wants to use the ribbon to make a border around the perimeter of a rectangular picture. The dimensions of the picture are shown below. Does Rachel have enough ribbon to make a border around this picture?

• No, because 14 + 14 + 15 + 15 = 58, and 58 > 50

• Yes, because 14 + 15 = 29, and 50 > 34

• No, because 14 X 15= 285, and 285 > 50