SOLUTION: I have 2 questions: determine the volume and the surface area of the a three-dimensional cube that is 7cm,7cm,7cm. I got as far as determining the formula for a cube was: v= s 3

Algebra ->  Surface-area -> SOLUTION: I have 2 questions: determine the volume and the surface area of the a three-dimensional cube that is 7cm,7cm,7cm. I got as far as determining the formula for a cube was: v= s 3       Log On


   

Question 448933: I have 2 questions: determine the volume and the surface area of the a three-dimensional cube that is 7cm,7cm,7cm. I got as far as determining the formula for a cube was: v= s 3
sa= 6s2 but I am sure this is wrong.
Please help.

The second question is: determine the volume of a large circle of 12cm, with a smaller circle inside of it that is 6cm? I do not even know where to start on this or even how to show all of my work.
Thank you....
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
You are correct with the volume and surface area of a sphere. Just replace s = 7.

For #2, you'll have to rephrase your question, because "circles" do not have volume. Do you mean sphere?