What is the surface area when a net is folded to make a rectangular prism 3 in 6 in 5 in​

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

What is the total area of the figure?