anonymous
  • anonymous
Can someone help me with Two questions? (Questions Are Inside)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
My answer for the first one is

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anonymous
  • anonymous
|dw:1449216740079:dw| I know that other section is 120 degrees. What would be the next step @Directrix
anonymous
  • anonymous
@superdavesuper
superdavesuper
  • superdavesuper
the arc in question is 120 degree. what is the angle for a complete circle?
anonymous
  • anonymous
360 Degrees
superdavesuper
  • superdavesuper
for the complete circle, the circumference is...
superdavesuper
  • superdavesuper
nope...360 has nothing to do with circumference :( circumference of a circle is its diameter x....
anonymous
  • anonymous
24 times 3.14 would give us the circumference ? 75.36?
superdavesuper
  • superdavesuper
correct :) and that circumference is for the whole circle of 360 degrees. now the arc u want to know is 120 degrees so.....
anonymous
  • anonymous
I multiplied the diameter by pie to get the circumference so what formula would I apply to this to get the answer? If you give me a solution I will try to solve
superdavesuper
  • superdavesuper
|dw:1449218073763:dw|
anonymous
  • anonymous
would the answer be D? That's what I got as a final answer
anonymous
  • anonymous
I think I may be going wrong somewhere
dayakar
  • dayakar
length of the arc (l) = x/360 * pi * r^2 here x= 120, r =12 ft
anonymous
  • anonymous
360 divided by 120 would Be 3
anonymous
  • anonymous
Pi= 3.14
anonymous
  • anonymous
12^2 = 144
dayakar
  • dayakar
120 divided by 360 =1/3
dayakar
  • dayakar
1/3 *pi *12*12
dayakar
  • dayakar
48 pi
anonymous
  • anonymous
EXACTLY
superdavesuper
  • superdavesuper
length is not pi*r^2.... it is pi*2r....
anonymous
  • anonymous
So I was correct the whole time
dayakar
  • dayakar
sorry l= x/360 * 2* pi*r
dayakar
  • dayakar
l= 1/3*pi *2*12
dayakar
  • dayakar
8*pi
dayakar
  • dayakar
@superdavesuper thank u ,i was mistaken
superdavesuper
  • superdavesuper
welcome @dayakar @LetsLearn2000 8pi is the right ans :)
anonymous
  • anonymous
lol I could do the work but you guys were confusing me with all the different formulas. Thanks though I will keep practicing at these types of problems.
superdavesuper
  • superdavesuper
@LetsLearn2000 u still got the second one - show us how u wuld calculate that! lol
anonymous
  • anonymous
Well the circumference would be 113.04 when Multiplying 3.14 by 36 Correct?
anonymous
  • anonymous
360 Degrees - 30 degrees would be 330 Degrees So that whole orange areas equals 330 degrees Correct?
anonymous
  • anonymous
Area**
superdavesuper
  • superdavesuper
correct on both @LetsLearn2000 but i wuld leave the total circumference as 36pi instead.
dayakar
  • dayakar
|dw:1449219569080:dw|
superdavesuper
  • superdavesuper
orange arc; not area...
dayakar
  • dayakar
l= 330/360 *2*pi*18 simplify it
anonymous
  • anonymous
66 pi
dayakar
  • dayakar
33pi
anonymous
  • anonymous
I Was Resolving the problem lol Your "simplify it" comment didn't pop up until I sent that
dayakar
  • dayakar
ok,is it clear
anonymous
  • anonymous
Im pretty good on other Math I just need more practice on these type of problems. But yes it's clear thanks for showing me how to solve and showing me formulas. I just need more practice thats all but thanks for the help guys I appreciate it a lot!
dayakar
  • dayakar
very good keep practice u become a master
superdavesuper
  • superdavesuper
welcome :)
anonymous
  • anonymous
@superdavesuper You had helped me on a question In another thread and I had gave an answer but I changed it because you said it was wrong. Turns out I had the correct already but since i changed It I got the problem wrong. Its ok though everybody makes mistakes haha thanks for the help!
superdavesuper
  • superdavesuper
sorry @LetsLearn2000 :(

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