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

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