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4/3 × 3,14 × 100
=418,67
volume tabung 》
3,14 × 100 x 20
= 6280
volume semua 》
6280 + 418,67
= 6698,67
Luas bola》
4 x 3,14 × 100
= 1256
Luas selimut tabung》
3,14 × 20 x 20
=1256
Luas semua》
1256 + 1256
= 2512