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1 Answer
Jim G.
Feb 11, 2018

#6.937" cubic cm to 3 dec. places"#

Explanation:

#V_(color(red)"pencil")=V_(color(red)"cylinder")+V_(color(red)"cone")#

#color(white)(xxxx)=pir^2h+1/3pir^2h#

#"convert dimensions to cm"#

#color(white)(xxxx)V_(color(red)"cylinder")=pixx(0.4)^2xx(15-1.8)#

#color(white)(xxxxxxxx)~~6.635" cubic cm"#

#V_(color(red)"cone")=1/3xxpixx(0.4)^2xx1.8#

#color(white)(xxxx)~~0.302" cubic cm"#

#rArrV_(color(red)"pencil")~~6.635+0.302=6.937" cubic cm"#

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