9.3 Composite Area

Unit 9: Area and Volume

9.3 Composite Area

Multiple Choice

Find the area of the parallelogram.

• 80

• 90

• 720

• 40

Multiple Choice

• 6.5 cm²

• 9.75 cm

• 13 cm²

• 8 cm²

Multiple Choice

• 91 ft²

• 77 ft²

• 78 ft²

• 105 ft²

1. Composite Area

When geometric figures are combined, the area of the resulting figure can be found by finding the individual figures' areas using the their formulas, and then adding/subtracting the results

Example 1:

Find the area of the figure shown.

Fill in the Blanks

Multiple Choice

Mason needs to purchase new glass for the window pictured here. How many square feet of glass will he need?

• 12.6 ft²

• 11.4 ft²

• 25.9 ft²

• 19.5 ft²

Multiple Choice

What is the area of the shaded region?

• 23.1 cm²

• 5.1 cm²

• 17.4 cm²

• 37.3 cm²

Multiple Choice

The figure shows two circles inside a trapezoid. Which procedure will help find the area of the shaded region?

• Find the area of the trapezoid and you have your answer.

• Add the area of the trapezoid and the area of both circles.

• Subtract the areas of both circles from the area of the trapezoid.

• Multiply the area of the trapezoid with the areas of both circles.

Multiple Choice

A local restaurant places tissue-paper liners in a basket for rolls as shown in the picture. How many square centimeters of tissue paper is needed to make one liner?

• 216.7 cm²

• 257.9 cm²

• 379.3 cm²

• 408.1 cm²

Multiple Choice

What is the area of this figure?

• 208.5 m²

• 109.5 m²

• 415.7 m²

• 322.4 m²