The square root of x squared is going to be x dx minus the integral. We can factor the pi out from 0 to 1 of x squared dx. And we could say this is going to be equal to pi times the antiderivative of x, which is just x squared over 2 evaluated from 0 to 1, minus pi times the antiderivative of x squared, which is x to the third over 3 evaluated from 0 to 1. This expression is equal to, and I'm going to arbitrarily switch colors just because the green is getting monotonous, pi times 1 squared over 2 minus 0 squared over 2. I could write it squared. 1 squared over 2 minus 0 squared over 2 minus pi times 1 to the third over 3 minus 0 to the third over 3. And so we get this is equal to, let me do it in that same blue color, it's equal to, so this is just simplified, this is just 0 right over here.