Question

Help! Pic below
Find the radius of the right cylinder
the height of the cylinder is equal to its diameter

Answer 1

confirm this: the S = surface area, right? is this the total surface area or just the curved surface area?

Answer 2

yes S=surface area

Answer 3

incomplete answer.

Answer 4

sorry sorry i believe the total surface area

Answer 5

ok,
then the formula would be:
\[S=2\times\pi r^2+2\pi rh\]

Answer 6

plug in "h=2r" and the value for "s" and solve for "r"

Answer 7

so it would be 150=2*pir^2+2pir 2x