let's see 8 times 8 is 64 16 times 8 is twice that so it's going to be 128 pi, then you have cm squared times cm so that gives us cm cubed or 128 pi cubic cm. remember, pi is just a number we write it as pi because it is kind of a crazy irrational number that if you were to write it, you could never completely write pi 3.14159 keeps going on never repeats so we just leave it as pi but if you wanted to figure it out you can get a calculator and this would be 3.14 roughtly times 128 so it would be like you know close to 400 cubic cm now, how would we find the surface area of this figure over here well, part of the surface area, are the two surfaces, the top and the bottom. so that would be part of the surface area and then the bottom over here would also be part of the surface area so if we are trying to find the surface area