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

Question

anonymous · Answer

attachment

anonymous · Answer

attachment

anonymous · Answer

My answer for the first one is

anonymous · Answer

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

anonymous · Answer

@superdavesuper

superdavesuper · Answer

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

anonymous · Answer

360 Degrees

superdavesuper · Answer

for the complete circle, the circumference is...

superdavesuper · Answer

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

anonymous · Answer

24 times 3.14 would give us the circumference ? 75.36?

superdavesuper · Answer

correct :) and that circumference is for the whole circle of 360 degrees.

now the arc u want to know is 120 degrees so.....

anonymous · Answer

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 · Answer

|dw:1449218073763:dw|

anonymous · Answer

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

anonymous · Answer

I think I may be going wrong somewhere

dayakar · Answer

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

anonymous · Answer

360 divided by 120 would Be 3

anonymous · Answer

Pi= 3.14

anonymous · Answer

12^2 = 144

dayakar · Answer

120 divided by 360 =1/3

dayakar · Answer

1/3 *pi *12*12

dayakar · Answer

48 pi

anonymous · Answer

EXACTLY

superdavesuper · Answer

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

anonymous · Answer

So I was correct the whole time

dayakar · Answer

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

dayakar · Answer

l= 1/3*pi *2*12

dayakar · Answer

8*pi

dayakar · Answer

@superdavesuper thank u ,i was mistaken

superdavesuper · Answer

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

anonymous · Answer

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 · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

Area**

superdavesuper · Answer

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

dayakar · Answer

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