Surface Area and Composite Figures

A figure made of triangles, quadrilaterals, semicircles, and other two-dimensional figures.

• Surface Area

• Height

• Composite Figure

• Formula

The sum of the areas of all surfaces (faces) of a 3-D figure.

• Surface Area

• Volume

• Composite Figure

• Base

• 54 cm2
• 45 cm2
• 63 cm2
• 36 cm2

What is the formula for the area of a trapezoid?

• A=bh

• A=1/2 bh

• A=1/2 (b₁+b₂) h

• A=1/2(b₁ x b₂₎ h

What is the area of this shape?

• 48 ft2

• 216 ft2

• 65 ft2

• 128 ft2

Find the area of the figure

• 26 ft²

• 20 ft²

• 52 ft²

• 40 ft²

Solve.

• 102 m²

• 39 m²

• 51.2 m

• 81 m²

what is the area of this semicircle ?

• 43.96 in²

• 21.98 in²

• 153.86 in²

• 76.93 in²

Find the area.

• 15 in²

• 7.5 in²

• 28 in²

• 56 in²

What measurement/number is not needed to find the area of the trapezoid?

• 9

• 11

• 12

• 15