Pythagorean Thm
About this exercise
Finding the hypotenuse of a right triangle.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- Right-triangle: a = ?, b = 21, c = 29. Solve.
- Right-triangle: a = ?, b = 4, c = 5. Solve.
- Right-triangle: a = 6, b = 8, c = ?. Solve.
- Right-triangle: a = ?, b = 24, c = 26. Solve.
Try it yourself first — open a section below only if you get stuck.
How to solve it
Square both shorter sides, add them, then take the square root.
Worked example
Sides of 6 and 8 give 36 + 64 = 100, and the square root is 10.
Common mistake
Adding the sides directly. 6 and 8 give 10, not 14.