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Mathematics 15 Online
OpenStudy (anonymous):

Find the area of the circle. Leave your answer in terms of x.

OpenStudy (anonymous):

OpenStudy (anonymous):

I thought A=PI*r^2 but it isnt working out that way

OpenStudy (anonymous):

in terms of x?what?there is no x in here..

OpenStudy (anonymous):

I KNOW! It is so confusing =(

OpenStudy (anonymous):

4.1=diameter=2r --->r=4.1/2

OpenStudy (anonymous):

now use pi*r^2

OpenStudy (anonymous):

A. 4.2025x m2 B. 8.405x m2 C. 16.81x m2 D. 11.2x m2

OpenStudy (anonymous):

4.1=2(2.05)

OpenStudy (anonymous):

A=PI*2.05^2 A= 13.20

OpenStudy (anonymous):

not a choice. and what is th

OpenStudy (anonymous):

e deal with the x?????

OpenStudy (anonymous):

@Krishnadas ?????

OpenStudy (anonymous):

I know, they have pi represent the m

OpenStudy (anonymous):

So see how you did 4.1/2?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Well if you square that you get 4.2025

OpenStudy (anonymous):

and then you multiply that by the m2 which im guessing is pi, see thats the only answer that seems legit

OpenStudy (anonymous):

ohhhhhh!

OpenStudy (anonymous):

yea, was it correcT?

OpenStudy (anonymous):

Doesn't that seem like a confusing way to find the area-instead of just using the formula we were taught?

OpenStudy (anonymous):

Or is it just me not getting it?

OpenStudy (anonymous):

Thank you for your help @doulikepiecauseidont

OpenStudy (anonymous):

I'm not sure, lol and there's more formulas for the area lol, they're complicated but give the same answer

OpenStudy (anonymous):

Yes, it was correct. Thank you again =)

OpenStudy (anonymous):

Sure, anytime =)

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