Question 482813
{{{18cm:8m =18cm/8m}}}


to simplify this ratio, convert either {{{cm}}} to {{{m}}}, or {{{m}}} to {{{cm}}}


{{{1m=100cm}}}  or {{{1cm=0.01m}}}


so,


{{{18cm/8m}}}


{{{18cm/800cm}}}...divide both numerator and denominator by {{{2}}}


{{{cross(18)9cm/cross(800)400cm}}}


{{{9cm/400cm}}}


OR if you take {{{1cm=0.01m}}}, you will have


{{{18*(0.01)m/8m}}}


{{{0.18m/8m}}}


{{{0.9m/4m}}}