The diameter of a solid sphere is measured by varrier calipers (10 VSD =MSD) and (1MSD =1mm) the reading of main scale is 20 & varnier scale reading is 1. the volume of sphere will be

Options

A. `4.23cm^(3)`
B. `4.25cm^(3)`
C. `4.323cm^(3)`
D. `5.253cm^(3)`

Answer

B

Explanation

d=20.1 mm [3 significant figure]
`v=(4pi)/(3)((d)/(2))^(3)=(pid^(3))/(6)=4.253648cm^(3)`
Taking 3 significant figures only, we get
`V=4.25cm^(3)`