4) panjang busur AB = (60° / 360°) 2 π r 24 = 0,16 x 2 π r 2 π r = 24 / 0,16 = 150 a) panjang busur BC = (75° / 360°) 2 π r = (75° / 360°) x 150 = 31,25 cm b) keliling lingkaran = 2 π r = 150 cm c) jari-jari lingkaran = keliling lingkaran / 2 π = 150 / 2 x 3,14 = 23,9 cm
Verified answer
4) panjang busur AB = (60° / 360°) 2 π r24 = 0,16 x 2 π r
2 π r = 24 / 0,16
= 150
a) panjang busur BC = (75° / 360°) 2 π r
= (75° / 360°) x 150
= 31,25 cm
b) keliling lingkaran = 2 π r
= 150 cm
c) jari-jari lingkaran = keliling lingkaran / 2 π
= 150 / 2 x 3,14
= 23,9 cm