Diketahui luasselimut tabung 1980cm jika jari jari 21 cm hitung tinggi tabung
Luas selimut = k lingkaran × t
1980 = 22/7 × 2 × 21 × t
t = 1980 × 7 / ( 22 × 21 × 2)
t = 1980 / (44 × 3)
t = 1980 / (132)
t = 15 cm
Diketahui luasselimut tabung 1980cm jika jari jari 21 cm hitung tinggi tabung
Luas selimut = k lingkaran × t
1980 = 22/7 × 2 × 21 × t
t = 1980 × 7 / ( 22 × 21 × 2)
t = 1980 / (44 × 3)
t = 1980 / (132)
t = 15 cm