Question

A copper wire is 3mm in diameter is wound about a cylinder whose length is 12 cm and diameter 10cm so as to cover the Csa of ar of cylinder . Find the length and mass of wire

Answer 1

Hloo dear....!!!!

Radius of wire =0.3
length of cylinder =12 cm
diameter = 10cm
Density is given to be 8.88gmcm³
CSA of cylinder = 2πrh
2 x 22/7 x 5 x 12
120 π cm²

l of wire = area /width
= 120π / 0.3
=1256
volume of wire = πr²h
3.14 x o.15² x 1256
88.7364cm³

mass = density x volume
8.88 x 88.7364
= 788g (approx)


hope it helps

@sonu..

Answer 2

Heya ....

====== Answer =======

Given :

Radius of wire = 0.3
Lenght = 12 cm
Diameter = 10 cm
Density = 8.88 gm cm^3

• CSA of cylinder = 2πrh
= 2*22/7*5*12
= 120 cm ^2

• Hight of wire = area/widht
= 120π/0.3
= 1256 cm

• Volume = πr^2 h
= 3.14*0.15^2*1256
= 88.7364 cm^3

• Mass = density X volume
= 8.88*88.7364
= 788g ( approx )

Thank you