What is the value of -7-84-0-0784-0-000784-0-00000784 -

The correct option is D 3.1108 √(7.84)+√(0.0784)+√(0.000784)+√(0.00000784) = 784/100+784/10000+784/1000000+784/100000000 = 28/10+28/100+28/1000+28/1 ...

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Byju's Answer

Standard IX

Mathematics

Laws of Exponents for Real Numbers

What is the v...

Question

What is the value of $\sqrt{7.84} + \sqrt{0.0784} + \sqrt{0.000784} + \sqrt{0.00000784}$ ?

3.08

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3.108

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3.1008

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3.1108

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Solution

The correct option is D 3.1108
$\sqrt{7.84} + \sqrt{0.0784} + \sqrt{0.000784} + \sqrt{0.00000784}$
= $\frac{784}{100} + \frac{784}{10000} + \frac{784}{1000000} + \frac{784}{100000000}$
= $\frac{28}{10} + \frac{28}{100} + \frac{28}{1000} + \frac{28}{10000}$
= $2.8 + 0.28 + 0.028 + 0.0028 = 3.1108$

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What is the value of √7.84+√0.0784+√0.000784+√0.00000784 ?

The correct option is D 3.1108√7.84+√0.0784+√0.000784+√0.00000784=784100+78410000+7841000000+784100000000=2810+28100+281000+2810000=2.8+0.28+0.028+0.0028=3.1108

What is the value of $\sqrt{7.84} + \sqrt{0.0784} + \sqrt{0.000784} + \sqrt{0.00000784}$ ?

The correct option is D 3.1108
$\sqrt{7.84} + \sqrt{0.0784} + \sqrt{0.000784} + \sqrt{0.00000784}$
= $\frac{784}{100} + \frac{784}{10000} + \frac{784}{1000000} + \frac{784}{100000000}$
= $\frac{28}{10} + \frac{28}{100} + \frac{28}{1000} + \frac{28}{10000}$
= $2.8 + 0.28 + 0.028 + 0.0028 = 3.1108$