Question

12 significant figures in multiplication and division
evaluate $\frac{25.2\times1374}{33.3}$. all the digits in this expression are significant.
a 1039.7
b 1040
c 1039.78
d 1039

Explanation:

Step1: Perform multiplication

$25.2\times1374 = 34624.8$

Step2: Perform division

$\frac{34624.8}{33.3}=1039.783784$

Step3: Consider significant - figures

The least number of significant figures in the given values ($25.2$, $1374$, $33.3$) is 3. Rounding $1039.783784$ to 3 significant figures gives 1040.

Answer:

B. 1040