Jawabanmu

2014-03-26T23:17:04+07:00
Panjang busur suatu lingkaran dapat dihitung dengan menggunakan rumus
L= R.0
2014-03-27T05:13:51+07:00
L juring =  \frac{ \alpha }{360} .\pi.r^{2}

p busur =  \frac{ \alpha }{360}.\pi.2.r

Diketahui :   L_{juring} = 6 ,      r = 4

\frac{ \alpha }{360}. \pi. r^{2} = 6 \\ \\ \frac{ \alpha }{360} .\pi. r.r = 6 \\ \\ \frac{ \alpha }{360} .\pi .r .4 = 6 \\ \\ \frac{ \alpha }{360} .\pi .r. 2.2 = 6 \\ \\ ( \frac{ \alpha }{360} .\pi .2.r ).2=6 \\ \\ (\frac{ \alpha }{360} .\pi.2.r )= 3 \\ \\ P_{busur} = 3


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