Hello, Snowcrash!

If you typed everything correctly, their answer is wrong . . .

From (1), we have: .I have a cylinder with its volume and surface area: .

Assume that the volume of the cylinder is 1000 cm³.

Express the surface area as a function of the radius.

Show that the function can be written: . . . . . This is wrong!

Substitute into (2): .

Therefore: .