This becomes minus 4 thirds, and then you have plus 1. Let's simplify this, and I'll do it all in the same color now. This is going to be equal to pi times 4 squared over 2, that is 16 over 2, which is equal to 8. Then you have 4 times 8, which is 32 over 3, so minus 32 over 3 plus 4. Then you have minus 1 half, we're just distributing the negative, plus 4 thirds, plus 4 thirds, and then you have minus 1. Now we just have to add up a bunch of fractions to simplify this thing. What do we get?