Question

Please sma cara pengerjaannya :'(

Answer 1

Semoga membantu~~~~~~~~~

Answer 2

Tinggi kerucut = 18 - 10 = 8
jari-jari kerucut = jari-jari tabung = 12/2 = 6
garis pelukis pd kerucut = s = √(8^2 + 6^2) = √(64+36) = √100 = 10
luas permukaan = luas alas + luas selimut tabung + luas selimut kerucut
= πr^2 + 2πrt + πrs
= πr (r + 2t + s)
= 3,14 . 6 (6 + 2 . 10 + 10)
= 678,24
= 18,84 (36)