Tolooongg bantuu yaaa jgn lupa pake cara.
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d tabung = d kerucut = 10 cm => r = 5 cm
t tabung = 8 cm
t kerucut = 12 cm
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s² = t² + r²
s² = 12² + 5²
s² = 144 + 25
s² = 169
s = 13 cm
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Luas permukaan: luas alas tabung + luas selimut tabung + luas selimut kerucut
L = πr² + 2πrt + πrs
L = πr(r + t + s)
L = 3,14 x 5 (5 + 8 + 13)
L = 15,7 x 26
L = 408,2 cm² (C)