Tentukan Luas Permukaan dan Volume Tabung berikut! 1. Jari-jari = 21, Tinggi = 25 2. Jari-jari = 14, Tinggi = 24 3. Diameter = 56, Tinggi = 21
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1. luas permukaan tabung = 2πr(r + t) = 2 x 22/7 x 21 x (21 + 30) = 2 x 66 x 51 = 6732 2. luas permukaan tabung = 2πr(r + t) = 2 x 22/7 x 14 x (14 + 24) = 2 x 44 x 38 = 3344 3. luas permukaan tabung = 2πr(r + t) = 2 x 22/7 x 28 x (28 + 21) = 2 x 88 x 49 = 8626
1. Volume = luas alas x tinggi = (22/7 x 21 x 21) x 25 = 1386 x 25 = 34650 2. Volume = (22/7 x 14 x 14) x 24 = 616 x 24 =14784 3. Volume = (22/7 x 28 x 28) x 21 = 2464 x 21 = 51744
2. luas permukaan tabung = 2πr(r + t) = 2 x 22/7 x 14 x (14 + 24) = 2 x 44 x 38 = 3344
3. luas permukaan tabung = 2πr(r + t) = 2 x 22/7 x 28 x (28 + 21) = 2 x 88 x 49 = 8626
1. Volume = luas alas x tinggi = (22/7 x 21 x 21) x 25 = 1386 x 25 = 34650
2. Volume = (22/7 x 14 x 14) x 24 = 616 x 24 =14784
3. Volume = (22/7 x 28 x 28) x 21 = 2464 x 21 = 51744