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CD/7 = 7/9
CD = 49/9 = 5,4
2.
volume kaleng besar = π r² t
= (22/7) x 14 x 14 x 60
= 36960
volume kaleng kecil = π r² t
= (22/7) x 7 x 7 x 20
= 3080
banyaknya kaleng kecil = 36960 : 3080 = 12 kaleng
3.
sudut jagung = 360 - 150 - 80 - 60 = 70
banyak padii = 150/70 x 35 = 75 ton