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ditanya kan a.panjang jari jari alas tabung
b.luas sisi tabung
JAWAB
V = 18.480 cm³
t = 30 cm
π = 22/7
maka
◆ V = 18.480
⇨ π.r².t = 18.480
⇨ (22/7).r².30 = 18.480
⇨ 22r².30 = 129.360
⇨ 22r² = 4.312
⇨ r² = 4.312/22
⇨ r = √196
⇨ r = 14 cm
a. r = 14 cm
b. luas sisi tabung = luas permukaan = 2πr(r+t) = 2.(22/7).14.(14+30) = 4.44.44= 7.744 cm²