A hollow shaft has 375 mm outside diameter and 275 mm inside diameter. The area of cross section is equal to

510.714 square millimeter

51071.4 square millimeter

1000 square millimeter

None of the above

Copper 50%, Tin 50%

Copper 60%, Tin 40%

Copper 80%, Tin 20%

Copper 40%, Tin 60%

upper critical temperature

lower critical temperature

melting temperature

freezing temperature

find out relative density of solids

find out relative density of liquids and solids

find out specific gravity of liquids

None of the above

200

0.125

1.14

8