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rebecca1233
Group Title
] The radius of a circle is multiplied by 10. Its area is _____ times bigger than the original circle.
 one year ago
 one year ago
rebecca1233 Group Title
] The radius of a circle is multiplied by 10. Its area is _____ times bigger than the original circle.
 one year ago
 one year ago

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rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
@Mertsj Can you guide me please
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
@mathteacher1729
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Lets make two circles. Let the radius of the first one be 1 and the radius of the second one be 10.
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
alright
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362242349336:dw
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
What is the area of the first circle? Just leave your answer in terms of pi.
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
What is the area of the second circle? Again, leave your answer in terms of pi.
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
but thats not what its asking for so the answer is 10
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
No, sweetheart. Just answer my questions. I'm trying to help you understand so you don't have to do so much work on the next problem you have that is similar to this one.
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
so the first one is 1
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
wait do i just do 10*10 cause its 10 times bigger that will give me 100
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362242536230:dw
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
3.14 (1)
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
What is the area of the second circle? Don't use 3.14. Just leave your answer in terms of pi
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
ii ( 10)
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362242645972:dw
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
alright so what next
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
So do you see that to find how many times bigger the second circle is we should divide the area of the second circle by the area of the first circle?
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
so the area of the first circle is 1
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Please look at the drawing I made. For the little circle, it says A = what?
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
And the area of the big circle is what?
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
100pie
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
And what is 100 pi divided by pi ?
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
100 / 3.14
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362242866060:dw
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
when i divide a 100 by pie i get a decimal
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362242905509:dw
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
it equals 100
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Do you understand so far because here is the important part which will save you work in the future?
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
yes. i get it :) Thanks. can you help me with a few more questions im stuck on
 one year ago

rebecca1233 Group TitleBest ResponseYou've already chosen the best response.0
please
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Wait. I want to teach you the general principle of the problem we just did.
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
In finding the area of a circle, what do you do with the radius?
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
You square the radius don't you?
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
So, if we make the radius 10 times bigger and then square it, since 10 squared is 100, the new circle will be 100 times bigger. Do you understand that?
 one year ago
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