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Mathematics 21 Online
OpenStudy (anonymous):

help please !! will give medal and fan

OpenStudy (anonymous):

OpenStudy (anonymous):

@campbell_st @zepdrix @elle150

OpenStudy (mathstudent55):

Have you learned that the exponent 1/2 means the square root?

OpenStudy (mathstudent55):

For example, \(\large a^{\frac{1}{2}} = \sqrt{a} \)

OpenStudy (mathstudent55):

For example \(\large 25^{\frac{1}{2}} = \sqrt{25} = 5\)

OpenStudy (anonymous):

yeah

OpenStudy (campbell_st):

since the solid is a square just take the square root \[\sqrt{64n^{36} }= \sqrt{64} \times \sqrt{n^{36}}\] then apply a little index notation for the square root \[\sqrt{64} \times (n^{36})^{\frac{1}{2}}\] hope it helps

OpenStudy (mathstudent55):

The area of a square is the square of the side. The side of a square is the square root of the area.

OpenStudy (anonymous):

ohhhh

OpenStudy (anonymous):

i love how you explain @mathstudent55

OpenStudy (campbell_st):

lol...someone always gives an answer

OpenStudy (mathstudent55):

That means since you have the area, you need to take its square root to find the side.

OpenStudy (anonymous):

yep

myininaya (myininaya):

And sometimes it isn't always the right answer

OpenStudy (anonymous):

i know

OpenStudy (campbell_st):

lol

myininaya (myininaya):

Please don't just shout answers (wrong or right) in the future @elle150 . Thanks kindly.

OpenStudy (anonymous):

i dont mind

myininaya (myininaya):

@karendiaz123 Answers (in this case) can be misleading as it might not be the right answer.

OpenStudy (anonymous):

oh true i understand

OpenStudy (mathstudent55):

\(Area = 64n^{36}\) \(\large Side = \sqrt{Area} = \sqrt{64n^{36}} = \sqrt{64}\times \sqrt{n^{36}}\) \(\large = (8^2)^\frac{1}{2} \times (n^{36})^{\frac{1}{2}}\) Now apply the rule of raising an exponent to an exponent.

myininaya (myininaya):

Also it doesn't help the asker to just have an answer. For example, in this case if you did go with that choice, it would be nice that you could actually confirm that was the right answer. But you wouldn't be able to unless you knew how to get there. And if you knew how to get there yourself then you could definitely eliminate that answer as a choice.

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