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Verified answer
Lp=2πr(r+t)=>2•3,14•8(8+80)
=>50,24(88)
=>4421,12 cm²
Panjang Tabung = t = 80 cm.
d = 16 cm, maka r = 1/2 x 16 = 8 cm.
π = 3,14
Ditanyakan: Luas Permukaan Tabung ..... ?
Penyelesaian :
L (Permukaan Tabung) = 2.π.r.(r+t)
= 2 x 3,14 x 8 (8+80)
= 6,28 x 704
= 4.421,12 cm².