Area of Rectangles, Parallelograms, Trapezoids, and Triangles

The length of the base of a parallelogram is 14 centimeters, and the corresponding height is h centimeters. Which formula can be used to find A, the area of the parallelogram in square centimeters?

• A = 14 + h

• A = 14 h

• A = 1/2 (14h)

• A = 1/2 (14 + h)

Tags

CCSS.6.G.A.1

The face of a lamp shade is shaped like a trapezoid. The dimensions of the face are shown in the diagram.

Which equation can be used to find A, the area of the face of the lamp shade in square inches?

• A = 1/2 (6 + 10) y

• A = 1/2 (6 + 10) x

• A = 1/2 (6) + (10) y

• A = 1/2 (6) + (10) x

Tags

CCSS.6.G.A.1

A rectangular computer screen has an area of A square inches. The width of the computer screen is 7 inches. Which equation represents x, the length of the computer screen in inches?

• x = 7/A

• x = A + 27

• x = A - 2(7)

• x = A/7

Tags

CCSS.HSA.REI.B.3

The length of a rectangle is 7 inches, and the area of the rectangle is 199.5 square inches. What is the width of the rectangle in inches?

• 28.5 in

• 192.5 in

• 1396.5 in

• 206.5 in

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

The dimensions of a lawn shaped like a trapezoid are given in meters.

What is the area of the lawn in square meters?

• 108 square meters

• 60 square meters

• 120 square meters

• 72 square meters

Tags

CCSS.6.G.A.1

Triangle PQR is shown.

PQ is 5 inches.

QR is 4 inches.

PR is 3 inches.

What is the area?

• 3.5 square inches

• 7 square inches

• 7.5 square inches

• 10 square inches

Tags

CCSS.6.G.A.1

The playground at a park is shaped like a trapezoid. The dimensions of the playground are shown in the diagram.

What is the are is square feet?

• 3120 square feet

• 1560 square feet

• 1768 square feet

• 3536 square feet

Tags

CCSS.6.G.A.1

Ms. Chen will paint an equilateral triangular tile. A drawing of the tile is shown.

The perimeter of the triangle is 18 inches. If the height is 8 inches, what is the area of the tile?

• 48 square inches

• 144 square inches

• 24 square inches

• 72 square inches

Tags

CCSS.6.G.A.1

What is the area of the parallelogram in square inches?

• 49 square cm

• 63 square cm

• 126 square cm

• 98 square cm  

Tags

CCSS.6.G.A.1

The area of a triangle is 36 square cm. If the area is 3 cm, what is the height?

• 24 cm

• 12 cm

• 108 cm

• 54 cm

Tags

CCSS.6.G.A.1