Decomposing Polygons to Find Area

The Scaasi's living room is a rectangle measuring 13 ft by 9 ft. What is its area?

• 117 ft²

• 130 ft²

• 58.5 ft²

• 104 ft²

Find the area of the square.

• 12,100 ft²

• 440 ft

• 220 ft²

• 10,100 ft²

A rectangular poster has an area of 38 square feet. It is 4 3/4 feet wide at its base. What is the height of the poster?

• 8 ft

• 8 ft²

• 180.5 ft²

• 180.5 ft

A rectangular banner measures 3 ft by 5 ft. How much material do you need for 8 banners?

• 120 ft²

• 15 ft²

• 15 ft

• 120 ft

Roger and Joanne are planting a rectangular garden. The garden is 9 1/2 ft by 13 ft. They want to use half the garden for cucumbers and half the garden for tomatoes. They decide to separate the garden into the two right triangles as shown. What is the area of the tomato part of the garden?

• 61.75 ft²

• 61.75 ft

• 123.5 ft²

• 123.5 ft

Find the area of the right triangle.

• 30 cm²

• 60 cm²

• 62 cm²

• 31 cm²

Michael is planting a garden. It has the shape of a right triangle. He wants 2 plants for each square yard of area. How many plants does he want in the garden?

• 168 plants

• 84 plants

• 175 plants

• 600 plants

Decompose the parallelogram into a rectangle. Which quadrilateral is the correct shape?

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• 
• 

What is the area of this parallelogram?

• 120 m²

• 60 m²

• 120 m

• 60 m

Find the area of the parallelogram.

• 112 m²

• 56 m²

• 96 m²

• 128 m²