Question 921805
A triangle has sides that measure 16, 12, and 20 what is the area
-----------
You can use Heron's Law.  google it to see how it works.
---
It's not necessary, tho, if you notice that the sides are a multiple of the 3, 4, 5 right triangle.
---
Area = b*h/2 = 12*16/2 = 96 sq units