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NEET 2022
Exam
NEET
Year
2022
Subject
Physics
Chapter
Mathematics in Physics

NEET 2022 · Physics · Mathematics in Physics

The area of a rectangular field (in m ^ 2 ) of length 55 . 3m and...

The area of a rectangular field (in m2{m}^{2}) of length 55.3m55 . 3m and breadth 25m25m after rounding off the value for correct significant digits is:

Options

  1. A13821382
  2. B1382.51382 . 5
  3. C14×10214 \times {10}^{2}
  4. D138×101138 \times {10}^{1}

Correct answer

C. 14×10214 \times {10}^{2}

Step-by-step solution

Length has 3 significant digits and breadth has 2 significant digits, hence the product should have least number of significant digits which is 2.

Area of rectangular field is, A=length×breadthA = length \times breadth

=55.3m×25m=1382.5m2= 55 . 3m \times 25m = 1382 . 5{m}^{2}

Thus, area of rectangular field upto correct significant figure is 14×10214 \times {10}^{2}.

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