For volume of a prism, the general rule is multiply the area of the base by the area of the height. For example, for a triangular prism, the volume would be (1/2)b*h*a if you set a = height of the prism and h = height of the triangle from the formula (1/2)bh, which is the area of a triangle.
Answer:
14
Step-by-step explanation:
You mean (7mn)^2, if so...
(7*3*-2)^2
-42^2=1764
-279936 if you want to check it the best way is to do it on a calculator <span />