Question

The outer diameter of a cylindrical wooden pipe is 30cm and its inner diameter is 26cm. The

length of the pipe is 42cm. Find the mass of the pipe if 1cm3

of wood has a mass of 0.8g.​

Answer 1

Answer:

T S A = 2πr^2+2πrh

tsa of inner wooden pipe + outer

2*22/7+(15)^2 + 2*22/7*13*42

2*22/7*225 + 26*22*6

44/7*225 + 3432

1414.2 + 3432

4846.2*0.8

3876.96g