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  • 07-04-2015
  • Mathematics
contestada

What is the volume of this triangular prism?




A.
33 cm3


B.
210 cm3


C.
420 cm3


D.
840cm3

What is the volume of this triangular prism A 33 cm3 B 210 cm3 C 420 cm3 D 840cm3 class=

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Аноним Аноним
  • 15-04-2015
[tex]The\ volume\ of\ the\ prism:V=A_B\cdot H\\\\A_B-area\ of\ the\ base;\ H-height\ of\ the\ prism\\-------------------------------\\\\In\ base\ is\ the\ triangle.\ The\ area\ of\ the\ triangle:A_\Delta=\frac{b\cdot h}{2}\\\\b-the\ basel\ h-the\ height\\\\b=14cm;\ h=4cm\\\\subtitute:A_\Delta=\frac{14\cdot4}{2}=\frac{56}{2}=\boxed{28\ (cm^2)}\\\\Answer:V=28\cdot15=\boxed{420\ (cm^3)}\leftarrow\boxed{\boxed{C}}}[/tex]
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