What is the length of AA' ?

Question

anonymous · Answer

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isaiah.feynman · Answer

A and A' are just the vertices of the two squares.

anonymous · Answer

Okay, that doesn't answer the question or even tell me how to solve it...

isaiah.feynman · Answer

Do they mean the distance between A and A'?

anonymous · Answer

I have no idea. :/ I've never seen this before and my lesson doesn't show me how.

anonymous · Answer

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anonymous · Answer

Yeah, you can specify a line with two points. The length AA' would mean the same as the distance between A and A'.

To go from A to A' you go 5 units across and 2 up.

Do you know Pythagoras's theorem? That will get you the answer.

anonymous · Answer

$$a ^{2}+b ^{2}=c ^{2}$$?

anonymous · Answer

That's it.
a and b are 5 and 2, so c is the answer

anonymous · Answer

7?

anonymous · Answer

that doesnt match with my answer box

agent0smith · Answer

$$\Large  5^{2}+2 ^{2}=c ^{2}$$first, what is 5^2 + 2^2?

anonymous · Answer

25 + 4 ?

agent0smith · Answer

so$$\Large c^2 = 29$$so c squared is 29. Find c.

anonymous · Answer

5.38?

agent0smith · Answer

idk if you're supposed to leave it as exact or a decimal. Exact would be square root of 29.

anonymous · Answer

wait, wouldn't my answer just be $$\sqrt{29}$$

isaiah.feynman · Answer

Yes.

anonymous · Answer

Ahh, well that was easy once I understood it, thanks!

isaiah.feynman · Answer

You can also use the distance formula too to do it..you'd still get sqrt 29.