The mass of a piece of paper is 0.02 g and the mass of a solid substance and the piece of paper is 20.036 g. If the volume of the solid is `2.16 cm^3` , calculate its density to the proper number of significant digits.

Options

A. `9.27 g cm^(-3)`
B. `9.3 g cm^(-3)`
C. `9.267 g cm^(-3)`
D. `43.24 g cm^(-3)`

Answer

A

Explanation

`{:(20.036),(-0.02),(overline(20.016) ):}`
Density ` = (20.02)/(2.16) = 9.268 " or " 9.27 g cm^(-3)`