We want to find the length of the leg b of the given right triangle. From the figure, we know that one leg of the right triangle is 6 millimeters long. We are also told that the area is 30 square millimeters. Let's see the diagram!
The area of a triangle is found by taking half of the product of its base and its height.
A=1/2bh
We can substitute A= 30 and h= 6 into this formula and solve for b, the missing leg — and base — of the triangle. Let's do it!
