A rectangular prism is truncated removing 10% of its height. The original height of the prism was 100 meters and it has a length of 4 meters and a width of 20 meters. What is the volume of the truncated prism?

800 m3

4,200 m3

3,800 m3

7,200 m3

Question

A rectangular prism is truncated removing 10% of its height.  The original height of the prism was 100 meters and it has a length of 4 meters and a width of 20 meters.  What is the volume of the truncated prism? 

 800 m3 

 4,200 m3 

 3,800 m3 

 7,200 m3

apoorvk · Answer

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in this prism problem, you basically are just cutting off the upper shaded part from th eprism that mean s you are removing the 10 percen tof it, of the new volume v'= v - v/10 =0.9v = 0.9(8000) cubic meters = 7,200 cubic meters.