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Luas selimut = π x r x s
550 = 22/7 x 7 x s
550 = 22s
s = 550/22
s = 25 cm
Tinggi = √(s²-r²)
Tinggi = √(25²-7²)
Tinggi = √(625-49)
Tinggi = √576
Tinggi = 24 cm