Answer:
345 [tex]cm^{3}[/tex]
Step-by-step explanation:
The volume of 2 rectangular boxes : 7 × 5 × 3 + 5 × 7 × 3 = 210 [tex]cm^{3}[/tex]The volume of given prism 210 + [(10 - 7 ) × 3 × (5 × 3) ]= 345 [tex]cm^{3}[/tex]
