This page is part of my unofficial solutions manual to the GRE Paper Practice Book (2e), a free resource available on the ETS website. They publish the questions; I explain the answers. If you haven’t worked through the Practice Book, give Section 6 a shot before reading this!

6.14: Area of a Triangle

This is a little more abstract than the usual GRE triangle problems (e.g., 5.24), but it isn’t any more complicated. All we need to do is recall the triangle area formula:

and replace b with 2h:

Then, we simplify (by combining like terms) to get:

which corresponds to answer choice (C).

Math Review Reference

For more on this topic, see the following section of the GRE Math Review:

• 3.3: Triangles (pp. 47-49)