a cylindrical road-roller made of iron is 1 m wide .ITs inner diameter is 54 cm and thickness of the iron sheet rolled into the road roller is 9 cm. Find the weight of the roller if 1 cc of iron weights 8gms.
the ans. is 1601.6....plzz solve it fast
Inner radius(r) = 27 cm
Outer radius(R) = 27+9 = 36cm
Width(h) = 100 cm
So the volume of iron used
So weight of roller is
= 178200(8) gm
=1425.6 kg