The area of a rectangular field (in m 2 ) of length 55.3 m and breadth 25 m after rounding off the value for correct significant digit is:

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Solution

Q.
The area of a rectangular field (in $m^{2}$ ) of length 55.3 m and breadth 25 m after rounding off the value for correct significant digit is: [2022]

1 $138 \times 10^{1}$

2 $1382$

3 $1382.5$

4 $14 \times 10^{2}$

Ans.
(4)

Given, that, length $(l)$ $= 55.3 m$

Breadth $(b) = 25 m$

The area of rectangular field is, $A = l \times b = 55.3 \times 25$

$= 1382.5 m^{2} = 1.3825 \times 10^{3} m^{2} \approx 1.4 \times 10^{3} = 14 \times 10^{2} m^{2}$

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