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596,6 cm² = πr² + 2πrt
596,6 cm² = 3,14×5×5 + 2×3,14×5×t
596,6 cm² = 78,5 cm² + 31,4t cm²
596,6 cm² = 109,9t cm²
t = 596,6 cm²/109,9 cm²
t = 5,42 cm
coba dihitung lagi!
596,6 = 2.3,14.5.(5+t)
596,6 =31,4.5t
596,6=157 t
t =596,6/157
= 3,8 Cm