Question 1177847

the ratio of altitudes: {{{3/4}}}

since pyramids are similar, volumes are proportional in same ratio of altitudes: {{{3/4}}}

{{{30/V=3/4}}}

{{{30*4=3V}}}

{{{V=30*4/3}}}

{{{V=10*4}}}

{{{V=40}}}

the volume of the larger pyramid is {{{40cm^3}}}