Math
posted by timmy .
A cylindrical tin can has a radius of 4.5cm and a height of 5 cm
(a)What is the surface area of the can
(b)What is its volume?
(c)What is the cans capacity
could somebody please answer this question so i can get past with math

a. 2pir^2 +2pirh
= 2pi(4.5^2)+ 2pi(4.5)(5)
= 127.23+141.37
= 268.6cm^2
b. pir^2h
= pi(4.5^2)(5)
= 318.09cm^3
c. the capacity and volume are the same thing: 318.09 cubic cm