Respuesta :

The bottom one is 90
And the top one is 100

V=190
the volume of the upper rectangular prism is

V1=4m*4m*5m = 80m^3

the volume of the lower rectangular prism is

V2 = 5m*3m*6m = 90 m^3

The total volume is 

V=V1+V2 = (80+90)m^3 = 170 m^3