Hello!
You can separate this into two rectangular prism
To find the volume of a rectangular prism you use the equation
V = whl
V is volume
w is width
h is height
l is length
Put in the values of the first rectangular prism
4 * 9 * 6 = 216
Put in the values of the second rectangular prism
3 * 6 * 5 = 90
Add these two values together
216 + 90 = 306
The answer is D)[tex]306cm^{3} [/tex]