立方 is read as りっぽう (rippou) and means cube.
りっぽう
rippou
りっぽうめーとる
cubic meter
りっぽうたい
cube
りっぽうこん
cube root
りっぽうさいみつじゅうてん
cubic close packing
めんしんりっぽうこうぞう
face-centered cubic structure
たちどまる
to stop (in one's tracks)
たちば
position
りったい
multi-storey car park
たつ
to be (the result of a division)
たちばなし
talking while standing
たちあがる
to make the initial charge
たちさる
to leave