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Cogito

Geometry · Chapter 8 · Lesson 2

Practice Worksheet

Surface Area

Unfold it and add up the faces.

11 problems · about 22 minutes · G-GMD.A.3, G-MG.A.1

NameDate

Figure — use these to answer the problems

Change the edges. Surface area counts the outside; volume counts the inside.
  • Cubes in one layer4 × 3 = 12
  • Layers2
  • 4 × 3 × 224 cubic units
Length4
Width3
Height2
Figure 1

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. Cube with edge 4. Surface area?

    Answer

  2. Cube with edge 2. Surface area?

    Answer

  3. Cube with edge 5. Surface area?

    Answer

  4. Cuboid 2 by 3 by 4. Surface area?

    Answer

Build It Up

The same ideas with more to keep track of.

3 problems

  1. Cube with edge 2. Volume?

    Answer

  2. Are surface area units squared or cubed? 1 for squared, 2 for cubed.

    Answer

  3. How many faces does a triangular prism have?

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

4 problems

  1. A cylinder net has how many circles?

    Answer

  2. Sort each quantity by its units.

    Write each item under the heading it belongs to: Surface area · Volume · Edge length

    Square units

    Cubic units

    Plain units

  3. The Cube

    A cube with edge 3. What is its surface area?

    Answer

  4. The Faces

    How many faces does a cuboid have?

    Answer