(1) A rectangle has 12 sides, four long, four wide and four high. 2.2*4+0.4*4+0.8*4 (the result is calculated by yourself)

(2) No, 15 is an odd number, and odd numbers can only be divided into odd numbers and even numbers (or zero).

(3) A cube has 12 sides, each side is equal in length, the solid side length is 48dm÷ 12, the surface area (6 faces) = side length * side length *6, and the volume = side length * side length * side length.

(4) 13*3*2* 1.33

(5)(80- 10*4)÷8= the side length of a square; Square side length * square side length * 10= volume