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    I know you do the angle divided by 360 then multiply by pir^2 like this http://prntscr.com/b976e6

    but then why don't we do the same on this one

    http://prntscr.com/b9771m

    on that, we do the angle divided by 360 just like the first one but we don't multiply by pir^2 instead they multiply 2(pi)(12)

    Help would be much-appreciated thanks.
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    (Original post by junayd1998)
    I know you do the angle divided by 360 then multiply by pir^2 like this http://prntscr.com/b976e6

    but then why don't we do the same on this one

    http://prntscr.com/b9771m

    on that, we do the angle divided by 360 just like the first one but we don't multiply by pir^2 instead they multiply 2(pi)(12)

    Help would be much-appreciated thanks.
    Do you understand the difference between length and area? Read the question again.
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    (Original post by Zacken)
    Do you understand the difference between length and area? Read the question again.
    Oh **** im so clueless, my bad how do you find the length then? Area not a problem.
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    (Original post by junayd1998)
    Oh **** im so clueless, my bad how do you find the length then? Area not a problem.
    (Angle / 360) * circumference of whole circle.
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    (Original post by junayd1998)
    Oh **** im so clueless, my bad how do you find the length then? Area not a problem.
    You find the length of an arc by multiplying the radius by theta (angle)
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    (Original post by Zacken)
    (Angle / 360) * circumference of whole circle.
    Thank you.
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    (Original post by junayd1998)
    Thank you.
    there r two formulas
    1. area of a sector: angle/360 x pie x r²
    2.arc length:angle/360 x 2 x pie x r
    u just have to know the right place to use them!!!!
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    (Original post by shahida sulaiman)
    there r two formulas
    1. area of a sector: angle/360 x pie x r²
    2.arc length:angle/360 x 2 x pie x r
    u just have to know the right place to use them!!!!
    Yeah, thanks!
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    (Original post by junayd1998)
    Yeah, thanks!
    ur welcome ^^
 
 
 
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