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A prism with a base area of 5 ft² and a height of 10 ft is dilated by a factor of 6/5 . What is the volume of the dilated prism? Enter your answer, as a decimal, in the box.

Answer :

carlosego
First, you must find the original volume of the prism by applying the following formula:

 V1=HxB

 V1 is the original volume of the prism.
 H is the height of the prism (H=10 ft).
 B is the base are of the prism (B=5 ft2)

 So, the original volume is:

 V1=HxB
 V1=(10 ft)(5 ft2)
 V1=50 ft2

 When the prism is dilated by a factor of 6/5, its volume is: 

 V2=(V1)*(6/5)^3
 V2=(50 ft³)*(6/5)^3
 V2= 86.4 ft³ 

 What is the volume of the dilated prism?

 The answer is: 
86.4 ft³ 
calculista

Step [tex]1[/tex]

Find the volume of the original prism

we know that

the volume of the prism is equal to

[tex]V=Bh[/tex]

where

B is the area of the base of the prism

h is the height of the prism

in this problem we have

[tex]B=5\ ft^{2}\\h=10\ ft[/tex]

substitute in the formula of volume

[tex]V=5*10=50\ ft^{3}[/tex]

Step [tex]2[/tex]

Find the volume of the dilated prism

we know that

[tex]volume\ of\ the\ dilated\ prism=[scale\ factor^{3}]*volume\ of\ the\ original\ prism[/tex]

we have

[tex]scale\ factor=\frac{6}{5}[/tex]

[tex]volume\ of\ the\ original\ prism=50\ ft^{3}[/tex]

substitute the values

[tex]volume\ of\ the\ dilated\ prism=(\frac{6}{5})^{3}*50[/tex]

[tex]volume\ of\ the\ dilated\ prism=1.728*50\\ \\volume\ of\ the\ dilated\ prism=86.4\ ft^{3}[/tex]

therefore

the answer is

the volume of the dilated prism is [tex]86.4\ ft^{3}[/tex]


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