Luas juring dengan sudut pusat 45 dan panjang jari-jari 14cm adalah

Please, let me answer your question :)
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Sudut pusat = 45°
r = 14 cm
Ditanya = LJ?

LJ = SP/360° x L Lingkaran
LJ = 45/360° x 22/7 x 14 x 14
LJ = 1/8 x 22 x 2 x 14
LJ = 1/8 x 44 x 14
LJ = 1/8 x 616 cm²
LJ = 77 cm²

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Hopefully this is the best for you :)

★ Anti Copas-Copas Club ★

MAPEL = MATEMATIKA
KELAS = 8
BAB = HUBUNGAN SUDUT & LINGKARAN

diketahui =
sudut pusat = 45°
jari jari = 14cm

ditanya = luas juring??

luas lingkaran = πr²
= 22/7 × 14 × 14
= 22 × 2 × 14
= 616cm2

- luas juring :
[tex] \frac{45}{360} = \frac{l.juring}{616} \\ \: \: \: \: \frac{1}{8} = \frac{l.juring}{616} \\ l.juring = \frac{616}{8} \\ l.juring = 77 {cm}^{2} [/tex]

semoga membantu