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Spesifikasi : Lingkaran
Kelas : 5, dan jenjang selanjutnya
L = π × r^2
3850 = 22/7 × r^2
3850 : 22/7 = r^2
3850 × 7/22 = r^2
1225 = r^2
√1225 = r
35 = r
d = 70
Kelas : 6
Kata Kunci : (-)
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22/7 × r^2 = 3850
22 × r^2 = 3850 × 7
22 × r^2 = 26.950
r^2 = 26.950 / 22
r^2 = 1225
r = Akar(1225)
r = 35 m
d = 2 × r
d = 2 × 35
d = 70 m ✔✔✔
HOPE IT HELP