Answer :
12 x 12 x 12 = 1728
6 x 6 x 6 = 216
8 x 8 x 8 = 512
216 +512 = 728
1728 - 728 = 1000
cube root of 1000 = 10
cube is 10 cm
6 x 6 x 6 = 216
8 x 8 x 8 = 512
216 +512 = 728
1728 - 728 = 1000
cube root of 1000 = 10
cube is 10 cm