If two cubes of dimensions 2 cm by 2 cm by 2 cm are placed side by side, what would the length $\left(l_1\right)$, breadth $\left(b_1\right)$, and height $\left(h_1\right)$ of the resulting cuboid be?

Given: Dimension of a cube = 2 cm × 2 cm × 2 cm

After joining two cubes, the resulting figure is shown below.

 As we can see when kept side by side, the length is the only measurement which increases, it becomes 2 + 2 = 4 cm.

The breadth = 2 cm and the height = 2 cm.

$\therefore l_1=4 \mathrm{cm}, b_1=2 \mathrm{cm}, h_1=2 \mathrm{cm}$