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Gambar berikut adalah 3 buah tabung berukuran sama yang akan diikat dengan tali. Jika diameter tabung adalah 21cm, panjang tali minimal yang diperlukan adalah.... a. 150cm b. 168cm c. 264cm d. 528cm

Gambar berikut adalah 33 buah tabung berukuran sama yang akan diikat dengan tali.\newlineJika diameter tabung adalah 21 cm 21 \mathrm{~cm} , panjang tali minimal yang diperlukan adalah....\newlinea. 150 cm 150 \mathrm{~cm} \newlineb. 168 cm 168 \mathrm{~cm} \newlinec. 264 cm 264 \mathrm{~cm} \newlined. 528 cm 528 \mathrm{~cm}

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Q. Gambar berikut adalah 33 buah tabung berukuran sama yang akan diikat dengan tali.\newlineJika diameter tabung adalah 21 cm 21 \mathrm{~cm} , panjang tali minimal yang diperlukan adalah....\newlinea. 150 cm 150 \mathrm{~cm} \newlineb. 168 cm 168 \mathrm{~cm} \newlinec. 264 cm 264 \mathrm{~cm} \newlined. 528 cm 528 \mathrm{~cm}
  1. Identify Circumference Formula: Identify the circumference of one cylinder using the formula C=πdC = \pi d, where dd is the diameter.C=π×21 cm.C = \pi \times 21\,\text{cm}.
  2. Calculate Circumference: Calculate the circumference. C=3.14×21 cm=65.94 cm.C = 3.14 \times 21\,\text{cm} = 65.94\,\text{cm}.
  3. Multiply Circumference by 33: Since there are 33 cylinders, multiply the circumference of one cylinder by 33.\newlineTotal circumference = 3×65.94 cm=197.82 cm3 \times 65.94\,\text{cm} = 197.82\,\text{cm}.
  4. Add Diameter for Rope Length: The rope needs to go around all three cylinders, so we need to add the diameter of one cylinder to the total circumference for the rope to tie them together.\newlineTotal rope length = Total circumference + Diameter of one cylinder.
  5. Calculate Total Rope Length: Calculate the total rope length.\newlineTotal rope length = 197.82 cm+21 cm=218.82 cm197.82\,\text{cm} + 21\,\text{cm} = 218.82\,\text{cm}.

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