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**## 1. Homework Statement**

Let P = (1,1,1), Q = (0, 3, 1) and R = (0, 1, 4). Find the area of triangle PQR

## Homework Equations

## \frac {|PQ × PR|}{2} ## = area (The crossproduct divided by two)

## The Attempt at a Solution

I lost my answer key, so I want to check if my final answer of ## \frac {\sqrt {13}}{2} ## is right. Thanks everyone. If it isn't, I'll put up my work. ##