Question

Hollow copper pipe of inner diameter 6 cm and Outer diameter 10 cm is melted and change into a solid circular cylinder of the same height as so the pipe find the diameter of the solid cylinder

Answer 1

the answer is 8cm it can be done by equating the volumes...

Answer 2

Answer:

Step-by-step explanation:

inner diameter(r) = 6 cm

outer diameter(R) = 10 cm

so, inner radius (r) = 3 cm

outer radius (R) = 5 cm

let, height =h

volume of hollow cylinder = π(R^2-r^2) h

= π (5^2-3^2)h

=π (25-9)h

=16πh

Given, it is recasted into a solid cylinder

U1=U2

16πh = πr^2h

16 =r^2

r=4cm

Diameter of solid cylinder = 8cm

hope this helps u