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176 = 2 x 22/7 x r
176 ÷ 2 = 22/7 x r
88 = 22/7 x r
88 x 7/22 = r
28 = r
L.P. tabung = 2(L.a + L.s)
8800 = 2(() + (p x l)
8800 = 2((22/7 x 28²) + (176 x l))
8800 ÷ 2 = 2464 + 176l
4400 = 2464 + 176l
4400 ÷ 2464 = 176l
1936 = 176l
1936 ÷ 176 = l
11 = l
maka, l = t
jadi, tinggi tabung adalah 11 cm