The area of a rectangular field (in $m^2$) of length 55.3 m and breadth 25 m after rounding off to the value f

Question

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

Accepted Answer

Area = Length $	imes$ Breadth = $55.3 	ext{ m} 	imes 25 	ext{ m} = 1382.5 	ext{ m}^2$. Since the breadth (25 m) has only two significant figures, the result must be rounded to two significant figures, which is $1400 	ext{ m}^2$ or $14 	imes 10^2 	ext{ m}^2$.

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