The area of a square field is given to be $14400 c m^{2}$ . What is the length of the field?

12 cm

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120 cm

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144 cm

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1440 cm

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Solution

The correct option is B 120 cm
Area of a square of side $a$ units is given by $a^{2}$ sq. units.
Thus, $14400 = a^{2} = 120^{2}$
$⟹ a = 120 c m$
Thus, the length of the field equals 120 cm.

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The area of a square field is given to be 14400 cm2. What is the length of the field?

The correct option is B 120 cmArea of a square of side a units is given by a2 sq. units. Thus, 14400=a2=1202 ⟹a=120 cm Thus, the length of the field equals 120 cm.

The area of a square field is given to be $14400 c m^{2}$ . What is the length of the field?

The correct option is B 120 cm
Area of a square of side $a$ units is given by $a^{2}$ sq. units.
Thus, $14400 = a^{2} = 120^{2}$
$⟹ a = 120 c m$
Thus, the length of the field equals 120 cm.