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JEE PYQ: Mathematics In Physics Question 20

Question 20 - 2019 (09 Apr Shift 2)

The area of a square is 5.29 cm$^2$. The area of 7 such squares taking into account the significant figures is:

(1) 37 cm$^2$

(2) 37.030 cm$^2$

(3) 37.03 cm$^2$

(4) 37.0 cm$^2$

Show Answer

Answer: (4)

Solution

$A = 7 \times 5.29 = 37.03$ cm$^2$ The result should have three significant figures, so $A = 37.0$ cm$^2$


Learning Progress: Step 20 of 25 in this series