The length and breadth of a metal sheet are 3. 124m and 3. 002m...

The length and breadth of a metal sheet are $3. 124m$ and $3. 002m$ respectively. The area of this sheet up to the correct number of significant figures is

Options

A $9.378 m^{2}$
B $9.37 m^{2}$
C $9.378248 m^{2}$
D $9.3782 m^{2}$

Correct answer

A. $9.378 m^{2}$

Step-by-step solution

Area of metal sheet $= 3.124 \times 3.002 m^{2}$

$= 9.378248 m^{2}$

Now, the result must have significant figures equal to the least of figures being multiplied, so, area of metal sheet $= 9.378 m^{2}$ (four significant digits)

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