Question

please solve this in step by step ​

Answer 1

Answer:

ii) √125 = √5 = 2.236

√64 = √4 = √2 = 1.414

= 2.236/1.414

= 1.58

Answer 2

Answer:

(i) 15.412 (ii) 1.3975

Step-by-step explanation:

Part (i)

$\sqrt{72} = \sqrt{2*2*2*3*3}$

$\sqrt{72} = 2*3*\sqrt{2}$

$\sqrt{72} = 2*3*1.414$$\sqrt{72} = 8.484$

Now

$\sqrt{48} = \sqrt{2*2*2*2*3}$

$\sqrt{48} = 2*2*\sqrt{3}$

$\sqrt{48} = 2*2*1.732$

$\sqrt{48} = 6.928$

Now,

$\sqrt{72} + \sqrt{48} = 8.484 + 6.928$

$\sqrt{72} + \sqrt{48} = 15.412$

Part (ii)

$\sqrt{125} = \sqrt{5*5*5}$

$\sqrt{125} = 5*\sqrt{5}$

$\sqrt{125} = 5*2.236$

$\sqrt{125} = 11.18$

Now

$\sqrt{64} = \sqrt{2*2*2*2*2*2}$

$\sqrt{64} = 2 * 2*2$

$\sqrt{64} = 8$

Now

$\sqrt{125/64} = \sqrt{125} / \sqrt{64}$

$\sqrt{125/64} = 11.18 / 8$

$\sqrt{125/64} = 1.3975$

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