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Mathematics 7 Online
OpenStudy (anonymous):

Okay I am having trouble with questions like this one, can someone please explain it to me, and walk me through finding the correct answer?

OpenStudy (anonymous):

Find the perimeter of the image: (I will add the link to the picture)

OpenStudy (anonymous):

Answers: A. 25.8 B. 26.1 C. 27.5 D. 28.6

OpenStudy (jtvatsim):

OK, looks like what you need is to calculate the distance between each of the two points. So, for example, we need to find the distance between Q(2,0) and R(4,5).

OpenStudy (anonymous):

so I would use the distance formula?

OpenStudy (jtvatsim):

If you are familiar with that formula, yes!

OpenStudy (jtvatsim):

I prefer this version, but you can use whatever you are most comfortable with: d = square root( (difference in x's)^2 + (difference in y's)^2 )

OpenStudy (anonymous):

Thank you! I will work it out and then show you my answer, is it okay if I tag you in it? and then if I post the next question can I tag you? I only have 1 more:)

OpenStudy (jtvatsim):

Sure! Remember for this one that you will need the distance for each of the edges all the way around the figure. :)

OpenStudy (anonymous):

so when I find the distance for each edge then what do I need to do?

OpenStudy (jtvatsim):

Once you find each distance (there should be 5) the perimeter is just the total of them added up.

OpenStudy (anonymous):

OHHHHHHH! okay!

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