To find the surface area of a rectangular prism, we need to calculate the area of each of the six faces and then sum them up.
The bottom face has an area of 10in x 9in = 90in²
The top face has an area of 10in x 3in = 30in²
The front face has an area of 9in x 3in = 27in²
The back face has the same area as the front face, which is 27in²
The right side face has an area of 10in x 3in = 30in²
The left side face has an area of 9in x 3in = 27in²
Adding these up:
90in² + 30in² + 27in² + 27in² + 30in² + 27in² = 231in²
Therefore, the surface area of the rectangular prism is 231in².
What is the surface area of the rectangular prism?
10in on the bottom
3in on the right top side
9in on the bottom right side
1 answer