Worked examples
Two examples
Example 1
Every side of a figure is multiplied by 3. Its area is multiplied by
- Area has two dimensions, each multiplied by 3: 3 × 3.
Answer: 9
Example 2
Every edge of a solid is doubled. Its volume is multiplied by
- Three dimensions, each doubled: 2 × 2 × 2.
Answer: 8
Where this is taught: Quiz 37: Similar Figures, “What happens to area”
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.