Question

The length and breadth of a metal sheet are $3.124m$ and $3.002m$ respectively. The area of this sheet upto four correct significant figure is :

• A. $9.378m^2$
• B. $9.37m^2$
• C. $9.378248m^2$
• D. $9.3782m^2$

Answer 1

Answer: (A)

$9.378m^2$

Area of metal sheet $=3.124\times 3.002$ $=9.378248$

Now, the result must have significant figures equal to the least of figure being multiplied.

So, area of metal sheet $=9.378m^2$