The length and breadth of a metal sheet are 3.124 m and 3.002 m respectively. The area of this sheet up to four correct significant figures is

Question

The length and breadth of a metal sheet are 3.124 m and 3.002 m respectively. The area of this sheet up to four correct significant figures is (A) 9.376 m 2 (B) 9.378 m 2 (C) 9.379 m 2 (D) 9.388 m 2

Tardigrade Admin · Accepted Answer

Given length (l)=3.124 m and breadth (b)=3.002 m. Area of the sheet (A)=l × b=3.124 × 3.002=9.378248 m 2. Since both length and breadth have four significant figures, therefore area of the sheet after rounding off to four significant figures is 9.378 m 2.

Q. The length and breadth of a metal sheet are $3.124 m$ and $3.002 m$ respectively. The area of this sheet up to four correct significant figures is

$9.376 m^{2}$

$9.378 m^{2}$

$9.379 m^{2}$

$9.388 m^{2}$

Given length $(l) = 3.124 m$ and breadth $(b) = 3.002 m$ . Area of the sheet
$(A) = l \times b = 3.124 \times 3.002 = 9.378248 m^{2}$ .
Since both length and breadth have four significant figures, therefore area of the sheet after rounding off to four significant figures is $9.378 m^{2}$ .

Q. The length and breadth of a metal sheet are 3.124m and 3.002m respectively. The area of this sheet up to four correct significant figures is

9.376m2

9.378m2

9.379m2

9.388m2