x= { x E N / 0 A;B C x
A giao B={ 4; 6; 9 }
A hợp { 3; 4; 5}={ 1;3;4;5;6;8;9}
B hợp { 4;8}= { 2;3;4;5;6;7;8;9}
tìm A=?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.