Question

the external radius of a 14cm long metallic pipe is 9cm and the pipe is 1cm thick.find the voume of the metal used in the pipe.if the mass of 1cm^3 metal is 8.5g find the mass of the pipe.​

Answer 1

Answer:

7106gm

Step-by-step explanation:

Volume of pipe=πh(R²-r²)

                         =22/7*14(10²-9²)

                         =44(19)

                         =836

Density of material=8.5gm/cm³

Mass=Volume x Density

        =836x8.5

        =7106gms