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A rectangular prism and its dimensions are shown in the diagram.

What is the total surface area of this rectangular prism in square inches?

2 Answers

5 votes

Answer:

SA=78.5

Explanation:

Find the area to all visible sides. 4*2.5=10, 10*2 (because there is two of these shapes) is 20. 4.5*4=18, 18*2=36. Finally, 4.5*2.5=11.25, 11.25*2=22.5.

20+36+22.5=78.5

User Tonia
by
8.4k points
3 votes

The total surface area of the rectangular prism is 78.5 square inches.

To find the total surface area of a rectangular prism, we need to find the areas of all of its faces and add them together.

Image:

Height: 4 ft

Width: 2.5 ft

Length: 4.5 ft]

Solution:

The areas of the faces of the rectangular prism are as follows:

Top face: 2.5 ft * 4.5 ft = 11.25 sq in

Bottom face: 2.5 ft * 4.5 ft = 11.25 sq in

Left face: 4 ft * 4.5 ft = 18 sq in

Right face: 4 ft * 4.5 ft = 18 sq in

Front face: 4 ft * 2.5 ft = 10 sq in

Back face: 4 ft * 2.5 ft = 10 sq in

Total surface area:

11.25 sq in + 11.25 sq in + 18 sq in + 18 sq in + 10 sq in + 10 sq in = 78.5 sq in

A rectangular prism and its dimensions are shown in the diagram. What is the total-example-1
User MHebes
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8.0k points

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