PYQ NEET- Units Of Measurement L-8

Question: Q.5. The area of a rectangular field (in $\mathrm{m}^2$ ) of length $55.3 \mathrm{~m}$ and breadth 25 $\mathrm{m}$ after rounding off the value for correct significant digits is#

A) $138 \times 10^1$

B) 1382

C) 1382.5

D) $14 \times 10^2$

Answer: $14 \times 10^2$#

Solution:#

Area $=$ Length $\times$ Breadth $=55.3 \times 25 \mathrm{~m}^2$ $=1382.5 \mathrm{~m}^2$ $=14 \times 10^2 \mathrm{~m}^2$ (Rounding off of two significant figures)