Area of a square is 100- 2m2- Its side is-

The correct option is B (10± 1)m Area=(Length)^2 Length =(Area)^1/2 #160; #160; #160; #160; #160; #160; #160; =(100± 2) ...

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Byju's Answer

Standard XII

Physics

Finding Significant Figures

Area of a squ...

Question

Area of a square is $(100 \pm 2) m^{2}$ . Its side is:

(10 \pm 1) m

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(10 \pm 0.1) m

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(10 \pm \sqrt{2}) m

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10 \pm \sqrt{2}

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Solution

The correct option is B $(10 \pm 1) m$
$A r e a = (L e n g t h)^{2}$
$L e n g t h = (A r e a)^{1 / 2}$
$= (100 \pm 2)^{1 / 2}$
$= (100)^{1 / 2} \pm \frac{1}{2} \times 2$
$= (10 \pm 1) m$

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Area of a square is (100±2)m2. Its side is:

The correct option is B (10±1)mArea=(Length)2Length=(Area)1/2 =(100±2)1/2 =(100)1/2±12×2 =(10±1)m

Area of a square is $(100 \pm 2) m^{2}$ . Its side is:

The correct option is B $(10 \pm 1) m$
$A r e a = (L e n g t h)^{2}$
$L e n g t h = (A r e a)^{1 / 2}$
$= (100 \pm 2)^{1 / 2}$
$= (100)^{1 / 2} \pm \frac{1}{2} \times 2$
$= (10 \pm 1) m$