Break down the figure into 2 separate rectangular solid and find each volume and sum it.
Volume of smaller step: The volume of any rectangular solid is given by,
[tex]V=length*width*height[/tex]
So we have [tex]V=8*4*3=96[/tex]
Volume of larger step: The only dimension that is different than the smaller step is of the height, which is 6. So we have,
[tex]V=8*4*6=192[/tex]
Hence, the volume of the whole figure, in cubic inches, is
[tex]V= 192+96=288[/tex]. Answer choice B.
ANSWER: B
