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Verified answer
Bab Bangun RuangMatematika SD Kelas VI
tabung
luas selimut = 2 x π x r x t = 1.320
2 x 22/7 x r x 10 = 1.320
r = 1.320 x 7/440
r = 21 cm
luas sisi = 2 x luas alas + luas selimut
= 2 x π x r x r + 1.320
= 2 x 22/7 x 21 x 21 + 1.320
= 2.772 + 1.320
= 4.092 cm²