rumus = (sudut x keliling) + (2 x jari jari)
(60/360 x 2 x 3,14 x 20) + (2 x 20)
(1/6 x 125,6) + 40
20,93 + 40
60, 93 atau 60,90
jadi jawabannya A
Diketahui:
Sudut pusat = 60°
Jari-jari (r) = 20 cm
π = 22/7
Ditanya:
Keliling juring lingkaran?
Jawab:
Keliling juring
= Sudut pusat/360° x K.Lingkaran + 2r
= 60/360 x (2πr) + 2(20)
= 60/360 x (2 x 22/7 x 20) + 40
= 60/360 x 125,6 + 40
= 20,90 + 40
= 60,90 cm
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rumus = (sudut x keliling) + (2 x jari jari)
(60/360 x 2 x 3,14 x 20) + (2 x 20)
(1/6 x 125,6) + 40
20,93 + 40
60, 93 atau 60,90
jadi jawabannya A
Diketahui:
Sudut pusat = 60°
Jari-jari (r) = 20 cm
π = 22/7
Ditanya:
Keliling juring lingkaran?
Jawab:
Keliling juring
= Sudut pusat/360° x K.Lingkaran + 2r
= 60/360 x (2πr) + 2(20)
= 60/360 x (2 x 22/7 x 20) + 40
= 60/360 x 125,6 + 40
= 20,90 + 40
= 60,90 cm