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L = πr² + 5500cm²
L = 22/7 . 35² + 5500
L = 22/7 . 1225 + 5500
L = 3850 + 5500
L = 9350 cm²
luas selimut = 5500
Luas tabung tanpa tutup = luas selimut + luas alas =
5500 + 22/7 x 35 x 35 =
9350 cm^2
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