The area of a square is 5.29   c m 2 . The area of 7 such squares taking into account the significant…

The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is:
  1. 37.03 cm2
  2. 37.030 cm2
  3. 37.0 cm2
  4. 37 cm2

Solution

Given,
Area of square =5.29 cm2
Area of 7 square =5.29+5.29+5.29+5.29+5.29+5.29+5.29=37.03 cm2
{5.29 has 2 significant digits after decimal. Accordingly, the answer should also have two significant digits after decimal}.

Asked in: JEE Main 2019 (09 Apr Shift 2)

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