Worked examples
Two examples
Example 1
A right triangle has legs of 6 and 8. What is the hypotenuse?
- c2 = 62 + 82 = 36 + 64 = 100.
- c = √100.
Answer: 10
Example 2
A right triangle has legs of 4 and 7. What is the hypotenuse, to the nearest tenth?
- 16 + 49 = 65.
- √65 ≈ 8.06, which rounds to 8.1.
Answer: 8.1
Where this is taught: The Third Side, “Both legs known: find the hypotenuse”
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.