A rectangular prism has the following dimensions:

l=5a, w=2a
, and h=(a^3-3a^2+a)
. Use the formula V=(l)(w)(h)
to find the volume of the rectangular prism.

1 answer

To find the volume \( V \) of the rectangular prism, we can use the formula:

\[ V = l \cdot w \cdot h \]

Given the dimensions:

  • Length \( l = 5a \)
  • Width \( w = 2a \)
  • Height \( h = a^3 - 3a^2 + a \)

Now we can substitute these values into the volume formula:

\[ V = (5a) \cdot (2a) \cdot (a^3 - 3a^2 + a) \]

First, calculate the product of the length and width:

\[ 5a \cdot 2a = 10a^2 \]

Now we need to multiply this result by the height:

\[ V = 10a^2 \cdot (a^3 - 3a^2 + a) \]

Distributing \( 10a^2 \) into the polynomial:

\[ V = 10a^2 \cdot a^3 - 10a^2 \cdot 3a^2 + 10a^2 \cdot a \] \[ V = 10a^{5} - 30a^{4} + 10a^{3} \]

Thus, the volume of the rectangular prism is:

\[ \boxed{10a^5 - 30a^4 + 10a^3} \]

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