Use the image to answer the question.

An illustration shows a rectangular prism with a cube placed on top. The cube is 3 inches on all sides. The rectangular prism is 11 inches long and 4 inches high.

What is the volume of the composite figure?

(1 point)
in.3

1 answer

To find the volume of the composite figure, we need to calculate the volumes of both the rectangular prism and the cube, and then sum them.

  1. Volume of the Cube: The formula for the volume of a cube is: \[ V = s^3 \] where \(s\) is the side length.

    For the cube with a side length of 3 inches: \[ V_{\text{cube}} = 3^3 = 27 \text{ cubic inches} \]

  2. Volume of the Rectangular Prism: The formula for the volume of a rectangular prism is: \[ V = l \times w \times h \] where \(l\) is the length, \(w\) is the width, and \(h\) is the height.

    The dimensions given are:

    • Length (\(l\)) = 11 inches
    • Width (\(w\)) = (Since it isn't explicitly provided, let's assume the width is necessary for volume calculation. We will denote it as \(w\)).
    • Height (\(h\)) = 4 inches

    Thus, the volume of the rectangular prism can be expressed as: \[ V_{\text{prism}} = 11 \times w \times 4 \] Without the width, we cannot compute a specific volume for the prism.

Assuming we assume or find that width to be given as well or solve it through other means, we will carry on assuming \( w = 4 \) as a placeholder.

\[ V_{\text{prism}} = 11 \times 4 \times 4 = 176 \text{ cubic inches} \]

  1. Total Volume of the Composite Figure: Now we can sum the volumes of both the cube and the rectangular prism. \[ V_{\text{total}} = V_{\text{cube}} + V_{\text{prism}} \] Assuming \( w = 4 \): \[ V_{\text{total}} = 27 + 176 = 203 \text{ cubic inches} \]

Thus, the answer is: \[ \text{Total Volume} = 203 \text{ in}^3 \]

If any width information changes, please update it, and we will adjust the height accordingly.