Can someone help me with Two questions? (Questions Are Inside)

- anonymous

Can someone help me with Two questions? (Questions Are Inside)

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- anonymous

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- anonymous

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- anonymous

My answer for the first one is

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## More answers

- anonymous

|dw:1449216740079:dw| I know that other section is 120 degrees. What would be the next step @Directrix

- anonymous

@superdavesuper

- superdavesuper

the arc in question is 120 degree. what is the angle for a complete circle?

- anonymous

360 Degrees

- superdavesuper

for the complete circle, the circumference is...

- superdavesuper

nope...360 has nothing to do with circumference :(
circumference of a circle is its diameter x....

- anonymous

24 times 3.14 would give us the circumference ? 75.36?

- 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

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

|dw:1449218073763:dw|

- anonymous

would the answer be D? That's what I got as a final answer

- anonymous

I think I may be going wrong somewhere

- dayakar

length of the arc (l) = x/360 * pi * r^2
here x= 120, r =12 ft

- anonymous

360 divided by 120 would Be 3

- anonymous

Pi= 3.14

- anonymous

12^2 = 144

- dayakar

120 divided by 360 =1/3

- dayakar

1/3 *pi *12*12

- dayakar

48 pi

- anonymous

EXACTLY

- superdavesuper

length is not pi*r^2.... it is pi*2r....

- anonymous

So I was correct the whole time

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- dayakar

sorry
l= x/360 * 2* pi*r

- dayakar

l= 1/3*pi *2*12

- dayakar

8*pi

- dayakar

@superdavesuper thank u ,i was mistaken

- superdavesuper

welcome @dayakar
@LetsLearn2000 8pi is the right ans :)

- 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

@LetsLearn2000 u still got the second one - show us how u wuld calculate that! lol

- anonymous

Well the circumference would be 113.04 when Multiplying 3.14 by 36 Correct?

- anonymous

360 Degrees - 30 degrees would be 330 Degrees So that whole orange areas equals 330 degrees Correct?

- anonymous

Area**

- superdavesuper

correct on both @LetsLearn2000
but i wuld leave the total circumference as 36pi instead.

- dayakar

|dw:1449219569080:dw|

- superdavesuper

orange arc; not area...

- dayakar

l= 330/360 *2*pi*18
simplify it

- anonymous

66 pi

- dayakar

33pi

- anonymous

I Was Resolving the problem lol Your "simplify it" comment didn't pop up until I sent that

- dayakar

ok,is it clear

- 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

very good keep practice u become a master

- superdavesuper

welcome :)

- 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

sorry @LetsLearn2000 :(

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