anonymous
  • anonymous
PLEASE HELP ME!! The volume for a rectangular prism is given by the formula V = l · w · h, where l is the length of the prism, w is the width of the prism, and h is the height of the prism.If the volume of a rectangular prism with a height of 9 inches is 144 cubic inches and the base of the prism is a square, then what is the width of the rectangular prism?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
A.4 inches B.36 inches C.16 inches D.8 inches
anonymous
  • anonymous
can we go through this fast because its really getting late and i have school tomorrow sorry im not trying to be rude or just get answers from you :)
Rushwr
  • Rushwr
|dw:1443165182083:dw|

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Rushwr
  • Rushwr
if V =l*w*h then so since they have said that base of the prism is a square that means all the sides if the base are equal . So length = width !! since l = w We can write the equation as V =2wh right> Cuze l=w so lw=2w=2l \[w = \frac{ v }{ 2h }\]
Rushwr
  • Rushwr
\[w = \frac{ 144 }{ 9 *2 } = \frac{ 144 }{ 18} = 8inches\]
anonymous
  • anonymous
is the answer going to be 16 inches
anonymous
  • anonymous
oh wait the answer its 8 inches?
Rushwr
  • Rushwr
yep U have o divide the volume by 2h!!!!! not just h .
Rushwr
  • Rushwr
Got it ?
anonymous
  • anonymous
thats the wrong answer
Rushwr
  • Rushwr
huh?
anonymous
  • anonymous
the answer was 4 inches
Rushwr
  • Rushwr
oopz did a very careless mistake l*w = l^2 not 2l
Rushwr
  • Rushwr
that where i went wrong soo square root of 16 is 4

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