Jawaban:
maaf kalau salah
semoga membantu
Jawab:
14. Diketahui :
d = 14 cm ⇒ r =7 cm
t = 22 cm
Ditanya:
Luas Permukaan Tabung
L = 2 x [tex]\pi[/tex] x r x (r+t)
= 2 x [tex]\frac{22}{7}[/tex] x 7 x (7+22)
= 44 x 29
= 1.276 [tex]cm^{2}[/tex]
15. Diketahui:
r = 10 cm
p = 20 cm
l = 10 cm
t = 12 cm
Luas Permukaan
Luas Permukaan Kubus = 5 x [tex]r^{2}[/tex]
= 5 x [tex]10^{2}[/tex]
= 500 [tex]cm^{2}[/tex]
Luas Permukaan Balok = (p x l )+ (2 x p x t) + (2 x l x t) + ((20-10) x 10)
= (20x10) + (2x20x12) + (2x10x12) + ((20-10) x 10)
= 200 + 480 + 240 + (10 x 10)
= 200 + 480 + 240 + 100
= 1.020 [tex]cm^{2}[/tex]
Luas Permukaan Bangun Tersebut = 500 + 1.020 = 1.520 [tex]cm^{2}[/tex]
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Verified answer
Jawaban:
maaf kalau salah
semoga membantu
Jawab:
14. Diketahui :
d = 14 cm ⇒ r =7 cm
t = 22 cm
Ditanya:
Luas Permukaan Tabung
Jawab:
L = 2 x [tex]\pi[/tex] x r x (r+t)
= 2 x [tex]\frac{22}{7}[/tex] x 7 x (7+22)
= 44 x 29
= 1.276 [tex]cm^{2}[/tex]
15. Diketahui:
r = 10 cm
p = 20 cm
l = 10 cm
t = 12 cm
Ditanya:
Luas Permukaan
Jawab:
Luas Permukaan Kubus = 5 x [tex]r^{2}[/tex]
= 5 x [tex]10^{2}[/tex]
= 500 [tex]cm^{2}[/tex]
Luas Permukaan Balok = (p x l )+ (2 x p x t) + (2 x l x t) + ((20-10) x 10)
= (20x10) + (2x20x12) + (2x10x12) + ((20-10) x 10)
= 200 + 480 + 240 + (10 x 10)
= 200 + 480 + 240 + 100
= 1.020 [tex]cm^{2}[/tex]
Luas Permukaan Bangun Tersebut = 500 + 1.020 = 1.520 [tex]cm^{2}[/tex]