What is the degree measure of 3 pi?

To convert radians to degrees, you can use the conversion factor (180^\circ/\pi). Therefore, to convert (3\pi) radians to degrees, you multiply by this factor:

[ 3\pi \times \frac{180^\circ}{\pi} = 3 \times 180^\circ = 540^\circ. ]

Thus, (3\pi) radians is equal to (540^\circ).