Area & Perimeter STAAR Review

A triangle has a perimeter of 18 units. Each side of this triangle is the same length. What is the length of one side of the triangle in units?

• 3 units

• 6 units

• 19 units

• 54 units

What mistake, if any, did Gretchen make?

• The perimeter of the rectangle should be 24 yards.

• The perimeter of the square should be 36 yards.

• The perimeter of the triangle should be 20 yards.

• Gretchen did not make any mistakes in the table.

• 8 square units

• 15 square units

• 12 square units

• 16 square units

• 56 square feet

• 112 square feet

• 80 square feet

• Not here

A triangular sign has a perimeter of 44 centimeters. Two of the sides are each 14 centimeters long. What is the length of the third side in centimeters?

• 28 cm

• 16 cm

• 30 cm

• 14 cm

What is the area in square meters of Erin’s lawn?

• 18 square meters

• 36 square meters

• 62 square meters

• 72 square meters

Which of these rectangles have an area of 36 square centimeters?

• Rectangles V, W, X, Y, and Z

• Rectangles X and Y only

• Rectangles W and Z only

• Rectangles V, X, and Y only

What is the perimeter of the poster in inches?

• 128 inches

• 148 inches

• 152 inches

• 196 inches