#1**0 **

This is a right triangle with legs of 3 and 4......the "5" is the hypotenuse, "h"

CPhill
Mar 2, 2017

#3**+5 **

Best Answer

**I have a 3-4-5 triangle and they want me to find h, how do I find h?**

In a right triangle:

\(\begin{array}{|rcll|} \hline h &=& \frac{ab}{c}\\ &=& \frac{3\cdot 4}{5} \\ &=& \frac{12}{5} \\ \mathbf{h} & \mathbf{=} & \mathbf{2.4} \\ \hline \end{array} \)

heureka
Mar 2, 2017

#4**0 **

Ah.......thanks, raindropsfurrever and heureka......I wasn't thinking in terms of "h" being the height

BTW........here's how heureka gets his formula......

Let a and be legs......

Then the area is (1/2) ab

Now.......draw an altitude, h, to the hypotenuse, C

Then the area is (1/2)ch

Equating areas, we have

(1/2)AB = (1/2) ch

ab = ch divide by c

ab/c = h

CPhill
Mar 2, 2017