Mathematics in Physics

JEE Main level, single correct, medium

100 of 121

Question 100 of 121

The area of a square is 5.29cm2.5.29c{m}^{2}. The area of 77 such squares taking into account the significant figures is:

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Answer: (A) 37.03cm237.03c{m}^{2}

Given,
Area of square =5.29cm2=5.29 c{m}^{2}
Area of 77 square =5.29+5.29+5.29+5.29+5.29+5.29+5.29=37.03cm2=5.29+5.29+5.29+5.29+5.29+5.29+5.29=37.03 c{m}^{2}
{5.29 has 2 significant digits after decimal. Accordingly, the answer should also have two significant digits after decimal}.

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