In a 6* 10*4 cuboid, dig out an 8*4*4 cuboid and find out the surface area and volume of the remaining U-shaped dice, such as
( 10*4+ 10*6+4*6)*2+4*4*2-4*8*2
=(40+60+24)*2+32-64
=248+32-64
=2 16 (square)
10*4*6-8*4*4
=240- 128
= 1 12 (cubic)
A: The surface area of U-shaped die is 216; The volume is 1 12.