The volume of solid in the figure is 24 unit³.
How to calculate volume of composite solid
Given that each cube is a unit cube
volume of each unit cube = 1 x 1 x 1 = 1 unit³
The base has 3 rows of 4 cubes
Number of cube in the base = 3 * 4 = 12 cubes
The middle contains 3 rows of 3 cubes
Number of cube in the middle = 3 * 3 = 9 cubes
The top contains 3 rows of 1 cube
Number of cube in the top = 1 * 3 = 3 cubes
Total number of cube in the solid
= 12 + 9 + 3 = 24 cubes
Volume of solid = volume of each cube x number of cubes
= 24 * 1 unit³ = 24 unit³
Therefore, the volume of solid in the figure is 24 unit³.
Complete question