The surface area of the rectangular prism can be calculated by finding the area of each individual face and adding them together.
The rectangular prism has 6 faces:
- Top face: 4in x 9in = 36in^2
- Bottom face: 4in x 9in = 36in^2
- Front face: 4in x 3in = 12in^2
- Back face: 4in x 3in = 12in^2
- Left face: 3in x 9in = 27in^2
- Right face: 3in x 9in = 27in^2
Adding these together gives:
36in^2 + 36in^2 + 12in^2 + 12in^2 + 27in^2 + 27in^2 = 150in^2
Therefore, the surface area of the rectangular prism is 150 in^2.
unit 7 lesson 5
surface area of rectangular prisms quick check
use the image to answer the question
4in., 3in., 9in.
what is the surface area of the rectangular prism?
_ in. ^2
1 answer