Question

A cylindrical road roller made of iron is in its inner diameter is 54 cm and the thickness of iron sheet rolled into the road roller is 9 cm. Find weight of the roller if 1 cu. сm of iron weighs 8g.​

Answer 1

Step-by-step explanation:

SOLUTION

Given, inner diameter of road roller 54 cm and its thickness is 9cm

So, internal radius=27 and outer radius

Length or height of the roller 27+9=36

1m=100cm

So, volume of the cylinder

π(R²-r²)h=22/7×(36²-27²)100=178200cm³

Now, it is given that of iron weighs

Therefore, weight of the pipe

178200×8g=1425600g=1425.6kg