Consider the figure below.

Determine the total surface area of the triangular prism. The formula chart is at the bottom of the page.

(6 points)
How many faces does this figure have?
faces

Area of each triangular face =
square centimeters

Area of the smallest rectangular face =
square centimeters

Area of the middle rectangular face =
square centimeters

Area of the largest rectangular face =
square centimeters

TOTAL Surface Area of the Triangular Prism =
square centimeters

1 answer

To calculate the total surface area of a triangular prism, we need to consider the areas of the triangular bases and the rectangular faces. Let's denote the dimensions of the triangular prism:

1. Number of Faces: A triangular prism has 5 faces:

  • 2 triangular faces (top and bottom)
  • 3 rectangular faces (the sides)

So, the number of faces is: 5 faces.

2. Area of Each Triangular Face: The area of a triangular face can be calculated using the formula: \[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \] Assuming the base of the triangular face is \(b\) and the height is \(h\): \[ \text{Area of each triangular face} = \frac{1}{2} \times b \times h \] (You'll need specific values for \(b\) and \(h\) to calculate the area.)

3. Areas of Rectangular Faces: For the rectangular faces, you will calculate:

  • Smallest Rectangular Face: (Assuming it has length \(l\) and width \(w_1\)) \[ \text{Area} = l \times w_1 \]

  • Middle Rectangular Face: (Assuming it has length \(l\) and width \(w_2\)) \[ \text{Area} = l \times w_2 \]

  • Largest Rectangular Face: (Assuming it has length \(l\) and width \(w_3\)) \[ \text{Area} = l \times w_3 \] (You will need specific values for \(l\) and the widths \(w_1\), \(w_2\), and \(w_3\) to calculate these areas.)

4. Total Surface Area of the Triangular Prism: The total surface area \(SA\) of the prism is given by: \[ SA = 2 \times \text{Area of triangular face} + \text{Area of smallest rectangular face} + \text{Area of middle rectangular face} + \text{Area of largest rectangular face} \] Using the areas calculated above, you can now sum them to find the total surface area.

If you provide specific dimensions or values for the base and height of the triangular face, as well as the lengths of the rectangular faces, I can help you compute the exact values.