ALGEBRA - LESSON 55

The surface area of a solid is the combined area of the surfaces of the solid. In other words, to find the surface area, we find the area of all sides and add them together.

In this problem, answer question a.

• 100

• 600

• 1,000

• 240

• 200

The lateral surface area of a solid is the combined area of the surfaces of the solid not including the top or the bottom.

In this problem, answer question b.

• 300

• 600

• 700

• 400

• 200

Here is a real-world example of lateral surface area.

We can find the lateral surface area by multiplying the perimeter of the base by the height of the building (remember the perimeter, you add all sides of the shape).

• 1180

• 1350

• 2120

• 2150

• 1165

What is the lateral surface area of a tissue box with the dimensions shown.

Mathematical Equivalence

ON

Remember, with a cube, all sides are the same.

Mathematical Equivalence

ON

This is the total surface area.

Mathematical Equivalence

ON

Lateral does not include the top or the bottom of the solid.

Mathematical Equivalence

ON

Remember a negative times a negative equals a positive. a negative times a positive equals a negative.

Mathematical Equivalence

ON

Find x.

• 2

• 5

• 7

• 6

Find the measure of angle "x" in degrees.

• 90

• 175

• 75

• 190

• 45