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22/7 * 6 * 22/7 * r * r
6522,1254 cm kibik
Dit : Volume tabung ... ?
Jawaban :
Luas selimut = 2πrt
396 = 2 × 22/7 × r × 6
396 = 44 × 6 × r
396 × 7 = 264 × r
2772 = 264 × r
r = 2772 ÷ 264 =10,5 cm
Maka,
Volume tabung = πr²t = 3,14 × 10,5 × 10,5 × 6 = 2077,11 cm³.