The equation for the volume of a rectangular prism is: V = lwh where V = volume, l = length of base, w = width of base, and h = height of the prism.
From your picture, you can see that the length, l = 16cm, width, w = 9cm, and the height of the prism, h = 4cm. Plug these numbers into the equation and solve for volume: [tex]V = lwh\\
V = (16\:cm)(9\:cm)(4\:cm)\\
V = 576 \: cm^3[/tex]