How to find a valume of a prism when when we are not given the height?

Question

So I was learning how to find the surface area and volume. I came across few youtube tutorials which were simple. And in my book I found much harder problem. It asks me to find the volume of the prism when I'm given all sides of base instead of having only two (triangle width and height) and having height. I know that for finding the volume I need the base area multiply with height (A=Bh) but in this case my base area is already given AB=25CM BC=29CM AC=36CM and so is surface area (1620cm sqr) So I'm asked to find the volume given these things. I don't where do I start. This tutorial shows how to solve simpler problem than my. https://www.youtube.com/watch?v=5ZHXzB28Kxc he has base's width and height together with prism's height. I I have everything but height. What do I do? How do I find height? Do I still use that formule to find base area? In my case 1/2*25*29*36 or what? I have no idea. Here I attach a pic of prism. enter image description here