MY ANSWER IS 65 PLEASE CHECK IS IT RIGHT?

Question

A plastic pipe 10 cm long has an outside diameter of 5 cm and an inside diameter of 4 cm. If the density of the plastic is 0.92 g/cm3, what is the mass of the pipe? Use 3.14 π , and round your answer to the nearest gram.

Answer 1

.92*10*3.14*(5²-4²)=260 gm

Answer 2

Mass = Density * Volume

Volume of hollowed cylinder = PI * (Router^2 - Rinner^2) * height

Router^2 = 5^2 = 25

Rinner^2 = 4^2 = 16

height = 10

volume = 3.14 * 9 * 10 = 282.6

Mass = 0.92 * 282.6 = 259.992 ~ 260