Question

Find the number of unit cubes in the given 3D figure.

• A. 5
• B. 6
• C. 7
• D. 8

Answer 1

The correct option is A 5

A unit cube each, is visible from top and side view of the given 3D figure.
To find the number of unit cubes, first, we will draw parallel lines on the figure and join the dots to divide the figure in unit cubes and then count the number of cubes.

The total number of layers of cubes are 3.
Total number of cubes in the top layer = 1
Total number of cubes in the second layer = 1
Total number of cubes in the lower layer = 3
So total number of cubes
= 1 + 1 + 3 = 5.