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= 22/7×14²
= 22/7×196
= 616 cm²
volume tabung = luas lingkarang×tinggi
= 616×40
= 24640 cm³
kel lingkaran = 2 * 22/7 * 14 = 88
luas selimut = 40 * 88 = 3520
luas permukaan = 1232 + 3520 = 4752 cm^2
#cmiiw (itung lagi aja, takut salah jumlah atau kali)