( ( ( Solid objects ) ( that ( have ( regular shape ) ) ) ) ( ( can ( have ( ( their volume ) ( calculated ( by ( measuring ( their dimensions ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Solid) (NNS objects)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (NP (JJ regular) (NN shape)))))) (VP (MD can) (VP (VB have) (NP (NP (PRP$ their) (NN volume)) (VP (VBN calculated) (PP (IN by) (S (VP (VBG measuring) (NP (PRP$ their) (NNS dimensions))))))))) (. .)))
Solid objects that have regular shape can have their volume calculated by measuring their dimensions.
(ROOT (S (NP (NP (DT The) (NN volume)) (PP (IN of) (NP (DT a) (ADJP (ADVP (RB regularly)) (JJ shaped)) (JJ solid)))) (VP (MD can) (VP (VB be) (VP (VBN calculated) (PP (IN from) (NP (PRP$ its) (NNS dimensions)))))) (. .)))