Question

a hollow garden roller of 42cm diameter and length 152cm is made of cast iron 2m thick. find the volume of the iron used in the roller

Answer 1

Answer:

I don't know please don't mind

Answer 2

Answer:

inner radius 42/2. 21 cm

outer radius. 21+200. 221

length 152cm

Vol of iron used. r ( R^2 - r^2 )

22/7*22^2-21^2*152

22/7*48400*152

2323.121371.43 cm ^2

23.13 cm^ 3

please make it as brilliant