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

Question

The area of a square is 5.29 cm 2. The area of 7 such squares taking into account the significant figures is :- (A) 37 cm 2 (B) 37.0 cm 2 (C) 37.03 cm 2 (D) 37.030 cm 2

Tardigrade Admin · Accepted Answer

Total Area = A 1+ A 2+ ldots ldots ldots A 7 = A + A + ldots ldots .7 times =37.03 m 2 Addition of 7 terms all having 2 terms beyond decimal, so final answer must have 2 terms beyond decimal (as per rules of significant digits.)

Q. The area of a square is $5.29 c m^{2}$ . The area of $7$ such squares taking into account the significant figures is :-

$37 c m^{2}$

$37.0 c m^{2}$

$37.03 c m^{2}$

$37.030 c m^{2}$

Total Area $= A_{1} + A_{2} + \dots\dots\dots A_{7}$
$= A + A + \dots\dots .7$ times $= 37.03 m^{2}$
Addition of $7$ terms all having $2$ terms beyond decimal, so final answer must have $2$ terms beyond decimal (as per rules of significant digits.)

Q. The area of a square is 5.29cm2. The area of 7 such squares taking into account the significant figures is :-

37cm2

37.0cm2

37.03cm2

37.030cm2