Answer:
990 square cm.
Step-by-step explanation:
To solve this problem, we simply multiply the length, the width, and the height. The formula is shown below:
[tex]x=(l)(w)(h)[/tex]
l = length
w = width
h = height
Now, plug in the values:
[tex]x=(10)(9)(11)[/tex]
[tex]x=990[/tex]
Kevin will need 990 square cm. of paint to cover the box.