Angelina Jolie

Using sine wave analog multimeter to read square waves?

Here is my homework problem:

“If the AC voltage of a square wave is read using an inexpensive analog multimeter calibrated for sine wave input only, what would be the expected percent error?”

I think I’m supposed to look up specs of a cheap analog multimeter maybe? But even if I do that, I’m not sure how to produce an answer. Please help, thank you smart people of the world for spending your time helping a college student.