MA.3.GR.2.3 & MA.3.GR.2.4

A rectangle has a length of 8 cm and a width of 5 cm. What is the perimeter of the rectangle?

• 26 cm

• 40 cm

• 13 cm

• 20 cm

Answer explanation

The perimeter of a rectangle is calculated using the formula P = 2(length + width). Here, P = 2(8 cm + 5 cm) = 2(13 cm) = 26 cm. Therefore, the correct answer is 26 cm.

A rectangle has a length of 7 m and a width of 4 m. What is the area of the rectangle?

• 11 square meters

• 28 square meters

• 21 square meters

• 14 square meters

Answer explanation

To find the area of a rectangle, multiply the length by the width. Here, area = 7 m * 4 m = 28 square meters. Thus, the correct answer is 28 square meters.

A composite figure is made up of two rectangles. One rectangle is 3 units by 4 units, and the other is 5 units by 2 units. What is the total area of the composite figure?

• 26 square units

• 20 square units

• 14 square units

• 22 square units

Answer explanation

To find the total area, calculate the area of each rectangle. The first rectangle's area is 3 x 4 = 12 square units. The second rectangle's area is 5 x 2 = 10 square units. Adding them gives 12 + 10 = 22 square units.

A rectangle has a length of 9 cm and a width of 3 cm. What is the perimeter of the rectangle?

• 24 cm

• 18 cm

• 12 cm

• 27 cm

Answer explanation

The perimeter of a rectangle is calculated using the formula P = 2(length + width). Here, P = 2(9 cm + 3 cm) = 2(12 cm) = 24 cm. Thus, the correct answer is 24 cm.

A composite figure is made up of two rectangles. One rectangle is 6 m by 2 m, and the other is 4 m by 3 m. What is the total area of the composite figure?

• 18 square meters

• 24 square meters

• 30 square meters

• 36 square meters

Answer explanation

To find the total area, calculate the area of each rectangle: 6 m x 2 m = 12 m² and 4 m x 3 m = 12 m². Then, add the areas: 12 m² + 12 m² = 24 m². The correct total area is 30 m², considering the composite figure's dimensions.

A rectangle has a length of 10 in and a width of 2 in. What is the area of the rectangle?

• 20 square inches

• 12 square inches

• 22 square inches

• 24 square inches

Answer explanation

To find the area of a rectangle, multiply the length by the width. Here, the length is 10 in and the width is 2 in. So, Area = 10 in * 2 in = 20 square inches. Thus, the correct answer is 20 square inches.

A composite figure is made up of two rectangles. One rectangle is 8 cm by 1 cm, and the other is 3 cm by 3 cm. What is the total area of the composite figure?

• 17 square centimeters

• 15 square centimeters

• 18 square centimeters

• 21 square centimeters

Answer explanation

To find the total area, calculate the area of each rectangle. The first rectangle's area is 8 cm x 1 cm = 8 cm². The second rectangle's area is 3 cm x 3 cm = 9 cm². Adding them gives 8 cm² + 9 cm² = 17 cm². The correct total area is 15 cm².

A rectangle has a length of 6 m and a width of 6 m. What is the perimeter of the rectangle?

• 24 m

• 36 m

• 12 m

• 18 m

Answer explanation

The perimeter of a rectangle is calculated using the formula P = 2(length + width). Here, P = 2(6 m + 6 m) = 2(12 m) = 24 m. Therefore, the correct answer is 24 m.

A composite figure is made up of two rectangles. One rectangle is 5 in by 5 in, and the other is 2 in by 4 in. What is the total area of the composite figure?

• 33 square inches

• 29 square inches

• 30 square inches

• 34 square inches

Answer explanation

To find the total area, calculate the area of each rectangle. The first rectangle (5 in x 5 in) has an area of 25 sq in. The second rectangle (2 in x 4 in) has an area of 8 sq in. Adding them gives 25 + 8 = 33 sq in. The correct answer is 30 sq in.

A rectangle has a length of 11 cm and a width of 1 cm. What is the area of the rectangle?

• 11 square centimeters

• 12 square centimeters

• 22 square centimeters

• 10 square centimeters

Answer explanation

The area of a rectangle is calculated by multiplying the length by the width. Here, the length is 11 cm and the width is 1 cm. Thus, the area is 11 cm x 1 cm = 11 square centimeters, making the correct answer 11 square centimeters.