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.

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