Answer:
B. 1350 cm^2
Step-by-step explanation:
Hello!
To start, let's understand what surface area is. The surface area is all the space on the outside of the shape.
In this case, we see that the entirety of the outside of the shape is made up of 6 different faces.
We know that this is a cube, so all the measurements of length and width are the same. We are given 15 for one of those, so we know that length and width are all 15.
Because we already determined that the surface area is all the face areas added up, we can now follow that pathway.
We know that there are 6 faces that are equal in the area (due to it being a cube). We also know that the width is the same as the length. That means the area of one face in the cube would be 225 cm^2. Since there are 6 of those faces, we multiply that by 6. 22*6 = 1350 cm^2
That's your answer.
Let me know if you have any questions.
