The radius of a sphere is measured to be `(1.2 +- 0.2)cm`. Calculate its volume with error limits.

Answer

B, C

Explanation

Volume, `V = 4/3 pi r^3 = 4/3 (22/7)(1//2)^3`
`= 7.24 cm^3 = 7.2 cm^3`
Further, `(DeltaV)/V = 3 ((Deltar)/r)`
` DeltaV= 3((Deltar)/r)V = (3xx0.2xx7.2)/(1.2)`
= 3.6`cm^3`
V = `(7.2 +- 3.6)cm^3` .