320 cubic inches
128 cubic inches
448 cubic inches
Step-by-step explanation:
Step 1:
Given,
Dimensions of the first rectangular prism = l * b * h = 16*5*4
[length is 16 as the total length is 20 and the width of the 2nd prism till the dotted line is 4]
Dimensions of the second rectangular prism = l * b * h = 4*4*8
We need to determine volume of the 2 prisms and the whole figure. The volume of rectangular prism can be obtained by multiplying the length breadth and the height.
Step 2:
Volume of the first prism = l * b * h = 16*5*4 = 320 cubic inches
Volume of the first prism = l * b * h = 4*4*8 = 128 cubic inches
The volume of the whole figure is the sum of the 2 rectangular prisms = 320 + 128 = 448 cubic inches
