y=4–x2,y=0,x=0,где x>=0 вокруг оси оX
Vох=π ∫20(4–x2)2dx=π ∫20(16–8x2+x4)dx= =π(16x–(8x3/3)+(x5/5))|20=π(16·2–(8·8/3)+(32/5))=