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