Respuesta :

volumeprism=volumecube times number of cubes
vprism/vcube=number of cubes

vprism=12*5*4.25=255
vcube=side^3=(1/4)^3=1/64

vprism/vcube=255/(1/64)=255*64=16320 cubes

irspow
(12*5*4.25)(1/4)^3

255/(1/64)

255*64

16320

So 16320 cubes are needed to fill the prism.