Question

A cube is divided into 8 equal small cubes.Find the side of one small cube if the sides of original cube is a.​

Answer 1

Answer:

6b²

Step-by-step explanation:

Surface area of original cube is 6b² Volume of cube is b³

Volume of smaller cube is b³/8, which

implies side length of smaller cube is b/2 Surface area of 8 smaller cubes

combined is 8 x 6 x b/2² = 12b²

Difference is 12b² − 6b² = 6b²