Area of Composite Figures

You will need to find the area of the overall rectangle and then subtract the area of the two smaller triangles from it.

Hint: Area of rectangle = b (h)

Area of triangle = 1/2 b (h)

or 1/2 h (b)

or b (h) /2

Mathematical Equivalence

ON

What is the area of the shaded region?

• 23.1 cm²

• 5.1 cm²

• 17.4 cm²

• 37.3 cm²

Find an expression in terms of x that represents the area of the shaded region. 

Mathematical Equivalence

ON

What is the total area to the nearest whole number? ___ cm sq

Mathematical Equivalence

ON

Find the area.

HINT: You will need to imagine two separate rectangles.

Area of rectangle = b (h)

Mathematical Equivalence

ON

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

What is the total area to the nearest hundredth? ___ sq km

Mathematical Equivalence

ON

Tags

7.9C

What is the total area to the nearest hundredth? ___ yards squared

Mathematical Equivalence

ON

Write the formula with the substituted values to find the total area.

Mathematical Equivalence

ON

What is the approximate area of the shaded region?

• 70 cm²

• 12 cm²

• 82 cm²

• 58 cm²