Question

a can has a surface area of 371cm^2.Its height is 12cm. What is the radius of the circular top. Round to nearest hundreth.

Answer 1

\[s=2pirh\]

Answer 2

I started with 371=2*3.14*r*12 + 2*3.14*r^2

Answer 3

I was using formula for a right circular cylinder

Answer 4

i'm getting a radius of 48.56378644

Answer 5

is that surface area including the top and bottom?

Answer 6

i think you are trying to use the volume formula the surface formula is the one i posted

Answer 7

it is telling me the answer should be 3.75cm but I don't get that at all

Answer 8

I got no clue then, sorry i couldn't help

Answer 9

its for a can the surface area they give me is total for top bottom and rectangle section as if it was opened up and spread out
i think this may be my problem

Answer 10

r=3.74ish not 5.35