Question 979332

find the volumes
first convert {{{mm}}} into {{{cm}}}

{{{1cm=10mm}
 so, 
{{{80mm=8cm}}} by 
{{{75mm=7.5cm}}}
 {{{18mm=1.8cm}}} 

{{{V[ matchbox]=8cm*7.5cm*1.8cm}}}
{{{V[ matchbox]=108cm^3}}}

{{{V[box] =72cm * 60cm *45cm}}}

{{{V[box] =194400cm^3}}}

to find the number of matchboxes that fit in divide {{{V[box] }}} by {{{V[ matchbox]}}}

{{{V[box] /V[ matchbox]=194400cm^3/108cm^3}}}
{{{V[box] /V[ matchbox]=194400cross(cm^3)/108cross(cm^3)}}}

{{{V[box] /V[ matchbox]=1800}}}

so, {{{1800}}} matchboxes can be packed into a box