Question

Mass of a body is 210 gm and its density is $7.981gm/{cm}^3$. What will be its volume with regard to significant digits?

• A. $26.312{cm}^3$
• B. $26{cm}^3$
• C. $27{cm}^3$
• D. $26.3{cm}^3$

Answer 1

The correct option is D $26.3{cm}^3$

Density is the ratio of mass and volume.
$d=\frac{m}{V}$

$V=\frac{m}{d}$

$V=\frac{210}{7.981}$

$V=26.312c{m}^3$

The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer.

So the answer is 26.3