Answer
$$630^\circ$$
Work Step by Step
Multiply by $\dfrac{180^\circ}{\pi\space \text{radians}}$ to convert radians to degrees:
$$\dfrac{7\pi}{2}\space \text{radians}\times\dfrac{180^\circ}{\pi\space \text{radians}}= 630^\circ$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.