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Square Root of a Number

Write the cor...

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Question 24

Write the correct answer from the given four options.

Given that, $\sqrt{4096} = 64$ , the value of $\sqrt{4096} + \sqrt{40.96}$ is

a) 74
b) 60.4
c) 64.4
d) 70.4

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Solution

Given, $\sqrt{4096} = 64$
So, $\sqrt{4096} + \sqrt{40.96}$
$= 64 + \sqrt{4096 \times 10^{- 2}} = 64 + \sqrt{4096} \sqrt{10^{- 2}} = 64 + 64 \times 10^{- 1} = 64 + 6.4 = 70.4$

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Similar questions

\sqrt{4096} = 64

, what is the value of

\sqrt{40.96} + \sqrt{0.4096} + \sqrt{0.004096} + \sqrt{0.00004096}

.

Enter the nearest integer as answer.

Question 11

Write the correct answer from the given four options.

The sum of successive odd numbers 1, 3, 5, 7, 9, 11, 13 and 15 is

a) 81
b) 64
c) 49
d) 36

Question 12

Write the correct answer from the given four options.

The sum of first n odd natural numbers is

a) $2 n + 1$
b) $n^{2}$
c) $n^{2} - 1$
d) $n^{2} + 1$

Question 22

Write the correct answer from the given four options.

If m is the cube root of n, then n is

a) $m^{3}$
b) $\sqrt{m}$
c) $\frac{m}{3}$
d) $\sqrt[3]{m}$

Question 23

Write the correct answer from the given four options.

The value of $\sqrt{248 + \sqrt{52 + \sqrt{144}}}$ is

a) 14
b) 12
c) 16
d) 13

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Square Root of a Number

Standard VIII Mathematics

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