Ask your own question, for FREE!
Mathematics 15 Online
OpenStudy (poto):

need a little help here

OpenStudy (poto):

http://prntscr.com/d1tgzs @3mar

OpenStudy (3mar):

Sorry! I was busy. Excuse me!

OpenStudy (3mar):

Can you calculate the length of the rectangle by the formula of distance between two points?

OpenStudy (poto):

@3mar it's okay! but yes

OpenStudy (3mar):

Can we proceed? or you got it?

OpenStudy (poto):

Proceed please (:

OpenStudy (3mar):

With my pleasure!

OpenStudy (3mar):

For the length (the longest side) is between (4,2) and (-6,4) ok?

OpenStudy (3mar):

Sir @Poto! Are you there?

OpenStudy (poto):

Yes! My mother needed me.

OpenStudy (poto):

@3mar

OpenStudy (3mar):

Hats off to your mother!

OpenStudy (poto):

Heh, so can we continue

OpenStudy (3mar):

Of course. Can you?

OpenStudy (3mar):

Mr. @Poto!!!

OpenStudy (poto):

5+10+5+10

OpenStudy (3mar):

Is that for the length?

OpenStudy (poto):

yes

OpenStudy (3mar):

The length and width are inclined, not perfectly vertical or horizontal to find out its length directly!

OpenStudy (poto):

okay

OpenStudy (3mar):

Can you calculate the length of the rectangle by the formula of distance between two points?

OpenStudy (poto):

Yes

OpenStudy (3mar):

\[length=\sqrt{(4-2)^2+(-6-4)^2}=\sqrt{2^2+10^2}=\sqrt{104}=2\sqrt{26}=10.198\]

OpenStudy (poto):

so I round that

OpenStudy (poto):

10.198, do I round it?

OpenStudy (3mar):

Don't round it now, at the final result you would! now can you find out the width like that?

OpenStudy (poto):

No, I dont, know.

OpenStudy (3mar):

OK

OpenStudy (3mar):

\[width=\sqrt{(-3-2)^2+(3-4)^2}=\sqrt{5^2+1^2}=\sqrt{26}=5.099\] That is the width, the shortest side of the triangle. Now we have the length and the width, can you find out the perimeter!?

OpenStudy (poto):

30?

OpenStudy (3mar):

\[the.perimeter=2*(2\sqrt{26}+\sqrt{26})=6\sqrt{26}=30.69411=30.6\] Got something like that?

OpenStudy (3mar):

@Poto sir?

OpenStudy (poto):

I got i yes

OpenStudy (3mar):

so What did you pick?

OpenStudy (poto):

@3mar 30.6

OpenStudy (3mar):

Correct! you are right!

OpenStudy (poto):

Thank you @3mar

OpenStudy (3mar):

You are welcome!

OpenStudy (3mar):

Any more questions?

OpenStudy (poto):

Yes!

OpenStudy (3mar):

I will not be late for any help.

OpenStudy (poto):

Okay!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!