kak bantu dong cepet..

cb dicek lagi jawabannya, hasilnya 1.436,6 cm2

Bangun ruang #1 : Tabung tanpa Tutup
Luas Selimut Tabung Tanpa Tutup = Luas Alas + Luas Selimut/Sisi Tegak
L = πr² + 2πrt
[tex] \pi = \frac{22}{7} [/tex]
[tex]r = \frac{1}{2}.D = \frac{1}{2}.(14) = 7 [/tex]
t = 10

[tex]L = (\frac{22}{7}.7^{2}) + (2.\frac{22}{7}.7.10 [/tex])
[tex]L = (\frac{22}{7}.49) + (\frac{44}{7}.70 [/tex])
[tex]L = (22.7) + (44.10[/tex])
[tex]L = 154 + 440 [/tex]
[tex]L = 594[/tex] cm²

Bangun Ruang #2 : Kerucut Tanpa Alas
Luas Kerucut Tanpa Alas = Luas Selimut Kerucut
L = πrs
[tex] \pi = \frac{22}{7} [/tex]
[tex]r = \frac{1}{2}.D = \frac{1}{2}.(14) = 7 [/tex]
s = garis pelukis (sisi miring segitiga)
   tinggi kerucut = tinggi segitiga = 34 - 10 = 24
   alas segitiga = r = 7
[tex]s = \sqrt{ t^{2} + r^{2} } [/tex]
[tex]s = \sqrt{ 24^{2} + 7^{2} } [/tex]
[tex]s = \sqrt{576 + 49} [/tex]
[tex]s = \sqrt{625} [/tex]
[tex]s = \sqrt{ 25^{2} } [/tex]
[tex]s = 25[/tex]

[tex]L = \pi .r.s[/tex]
[tex]L = \frac{22}{7}.7.25 [/tex]
L = 22 × 25
L = 550 cm²

Luas Selimut Bangun = Luas Bangun Ruang #1 + Luas Bangun Ruang #2
Luas = 594 cm² + 550 cm²
Luas = 1.144 cm²