ada yg bisa bantu????????

Nomor 5.
Jari jari = 7 Cm
Ditanya panjang busur AB

Jawaban

P. Busur AB = (120/360) x Keliling lingkaran
P. Busur AB = 1/3 x 2 x π x r
P. Busur AB = 1/3 x 2 x 22/7 x 7
P. Busur AB = 44/3
P. Busur AB = 14,67 cm


NOMOR 6
jari jari = 20 cm

Ditanya
a). Panjang busur PQ
b). Luas juring

Jawaban :

P. busur PQ = (72/360) x 2πr
P. Busur PQ = (72/360) x 2 x 3,14 x 20
P. Busur PQ = 25,12 cm


Luas juring =(72/360) x Luas lingkaran

Luas juring = (72/360) x π x r²

Luas juring = (72/360) x 3,14 x 20²

Luas juring = 250,12 cm²



Semoga membantu.. Maaf jika Ada yg salah ✔