Penjelasan dengan langkah-langkah:
<aob = 120°
<boc = 150°
luas aob = 51 ⅓ cm² = 154/3 cm²
Luas juring BOC
Lj aob/Lj boc = (120°/360° x π x r²)/(150/360° x π x r²)
(154/3)/Lj boc = (1/3)/(5/12)
154/(3 x Lj boc) = 1/3 x 12/5
154/(3 x Lj boc) = 4/5
5 x 154 = 4(3 x Lj boc)
616 = 12 Lj boc
Lj boc = 770 : 12
Lj boc = 385/6 cm²
cara cepat
= <boc/<aob x luas juring aob
= 150°/120° x 154/3
= 5/4 x 154/3
= 385/6 cm²
[tex] \frac{385}{6} [/tex]
kita dapat mencari ya dengan:
[tex]51 \frac{1}{3} = \frac{120}{360} [/tex]
[tex]luas = 51\frac{1}{3} \times 3[/tex]
[tex]luas = 154[/tex]
Setelah mengetahui luas keseluruhan (360°), kita hanya tinggal mencari luas 150°
[tex]boc = 154 \times 150 \div 360[/tex]
[tex]boc = \frac{23100}{360} = \frac{385}{6} [/tex]
Langsung dengan 150/120:
[tex]boc = 51 \frac{1}{3} \times 150 \div 120[/tex]
[tex]boc = \frac{7700}{120} = \frac{385}{6} [/tex]
Semoga bermanfaat
Bisa jadiin jawaban terbaik? XD
Sumber: -
Kode: -
Kata kunci: -
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Penjelasan dengan langkah-langkah:
<aob = 120°
<boc = 150°
luas aob = 51 ⅓ cm² = 154/3 cm²
Luas juring BOC
Lj aob/Lj boc = (120°/360° x π x r²)/(150/360° x π x r²)
(154/3)/Lj boc = (1/3)/(5/12)
154/(3 x Lj boc) = 1/3 x 12/5
154/(3 x Lj boc) = 4/5
5 x 154 = 4(3 x Lj boc)
616 = 12 Lj boc
Lj boc = 770 : 12
Lj boc = 385/6 cm²
cara cepat
= <boc/<aob x luas juring aob
= 150°/120° x 154/3
= 5/4 x 154/3
= 385/6 cm²
Verified answer
Jawaban:
[tex] \frac{385}{6} [/tex]
Penjelasan:
Cara 1:
Mencari luas Lingkaran:
kita dapat mencari ya dengan:
[tex]51 \frac{1}{3} = \frac{120}{360} [/tex]
[tex]luas = 51\frac{1}{3} \times 3[/tex]
[tex]luas = 154[/tex]
Setelah mengetahui luas keseluruhan (360°), kita hanya tinggal mencari luas 150°
Mencari luas BOC:
[tex]luas = 154[/tex]
[tex]boc = 154 \times 150 \div 360[/tex]
[tex]boc = \frac{23100}{360} = \frac{385}{6} [/tex]
Cara 2:
Mencari langsung luas BOC:
Langsung dengan 150/120:
[tex]boc = 51 \frac{1}{3} \times 150 \div 120[/tex]
[tex]boc = \frac{7700}{120} = \frac{385}{6} [/tex]
Semoga bermanfaat
Bisa jadiin jawaban terbaik? XD
Sumber: -
Kode: -
Kata kunci: -
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