Worked examples
Two examples
Example 1
A cylinder has a radius of 3 ft and a height of 10 ft. Use 3.14. What is its volume?
- V = πr2h = 3.14 × 9 × 10.
Answer: 282.6 cubic feet
Example 2
A can has a radius of 2 in and a height of 5 in. Use 3.14. What is its volume?
- 3.14 × 4 × 5.
Answer: 62.8 cubic inches
Where this is taught: Quiz 35: Volume and Surface Area, “The whole of volume, in one line”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
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.