Question

Shishir is making a cube of side 6 cm using cubes of sides 2 cm. How many such cubes are needed?

• A. 216
• B. 27
• C. 9
• D. 36

Answer 1

The correct option is B

27

Given side of the cube is 2 cm. To make a cube of side 6 cm, we start off with arranging the available 2 cm cubes in all the dimensions. First for making the length 6 cm, we need 3 cubes of 2 cm each. Similarly, complete the breadth and height of the cube with 3 and 3 cubes repectively of 2 cm. So the total number of cubes needed is 3 x 3 x 3 = 27 to make a cube of side 6 cm.