Well if you posted the answer for number 1, I bet I could work out the answer and show you hjow I got it. Otherwise I've kinda forgotton how to do this

For #2, I CAN help you.

First, the vol of a cube is length times width times height right? But since all sides of a cube are equal, its just multiplying the same number 3 times.

So, 10 ^ 3 (which is really 1000) is just 10 times 10 times 10.

So, each side is 10 cm in length.

And since there's 12 edges on a cube, you just multiply 10 times 12 to get 120 cm, which is the total sum of the edges.

For SA, simply just find the area of one of the sides and multply it by 6, since theres 6 sides on a cube.

By finding the area of one side, you get 100 square cm (10 times 10)

So then you multply that by 6, and you end up with a total surface area of 600 cm squared.

I hope that made some sense to you,