The mass of a block is 87.2 g and its volume is `25 cm^(3)`. Its density upto correct significant figures is

Options

A. `3.488 g cm^(-3)`
B. ` 3.5 g cm^(-3)`
C. `3.48 g cm^(-3)`
D. `3.4 g cm^(-3)`

Answer

B

Explanation

`"Density"= ("Mass")/("Volume")= (87.2)/(25)= 3.488 cm^(-3)`
As mass has three significant figures and volume has two significant figures erefore as per rule, density will have two significant figures. Rounding off, we get, `"Density" = 3.5 g cm^(-3)`