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Verified answer
Diketahui :- Volume Tabung = 1.570 cm³
- Jari - Jari Tabung = 10 cm
- π = 3,14
Ditanya : Luas Permukaan Tabung = ....?
Penyelesaian :
- Tinggi Tabung
V = πr²t
1.570 = 3,14 × 10² × t
1.570 = 3,14 × 100t
1.570 = 314t
5 = t
t = 5 cm
- Luas Permukaan Tabung
Luas Permukaan Tabung = 2πr (r + t)
= 2 × 3,14 × 10 (10 + 5)
= 2 × 31,4 (15)
= 62,8 (15)
= 942 cm²