Answer:
3800 square centimeters
Step-by-step explanation:
We need to find the surface of the rectangular prism shown.
The surface area is the area of all the surfaces (including the bottom and top).
There are 6 surfaces, top and bottom is squares and 4 sides are rectangles.
The area of square is side * side, and
The area of rectangle is length * width
Top Area = 10 * 10 = 100
Bottom Area = 10 * 10 = 100
Area of 1 side = 90 * 10 = 900
Hence, area of 4 of these same sides is: 900 * 4 = 3600
Total Surface Area = 3600 + 100 + 100 = 3800
Total Carpet Needed = 3800 square centimeters
