r = jari-jari tabung

t = tinggi tabung​

​Permukaan tabung terdiri atas dua daerah lingkaran dan sebuah daerah persegi panjang

Unsur-unsur Tabung

R​umus Luas Permukaan Tabung

Luas Permukaan Tabung = (2 x Luas Lingkaran) +​ Luas selimut tabung

​Luas Lingkaran = π​r²

​Luas Selimut Tabung = 2πrt

Luas Permukaan Tabung = ( 2 x π​r² ) + 2πrt

Luas Permukaan Tabung = ​2π​r² +2πrt

Luas Permukaan Tabung = 2πr(r+t)

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