Respuesta :
Volume of an object = [tex]2.45 cm\times 3.2 cm\times 4.078 cm[/tex]
Now, according to significant figures rules of multiplication, the least number of the significant figures present in the question, determines the least number of significant figures in the solution.
Here, 3.2 cm has the least number of significant figures i.e. 2; therefore, the answer must be in only two significant figures.
Thus, volume of an object = [tex]31.97152 cm^{3}[/tex]
Round off the value of volume into two significant figures only, we get
Volume of an object =[tex]32 cm^{3}[/tex] (two significant figures)
Volume of the object=2.45 cm × 3.2 cm × 4.078 cm
=31.97 cm³
=32 cm³
Correct number of significant figures allows the answer to be 32 cm³.
As while doing multiplication and division, the answer must have the same number of significant figures as in the term with the fewest number of significant figures. So we round off the number to get correct significant numbers that is 32 cm³.