jawab secepatnya besok di kumpulkan.

47. Volume tabung =phi×r×r×t
=22/7×21×21×45
=22×63×45
=22×2835
=62370cm^3
48.324R=......F
324R=9/4×324+32
324R=9×81+32
324R=279+32
324R=311F
49.Dik tinggi gedung=2 1/2cm/2,5cm
Skala =1:400
Jawab
Tinggi gedung s=tingg pada peta÷skala
Tinggi gedung s=2,5÷1/400
=2,5×400
=100
Maaf kalo salah

[tex]47) \: v \: tabung \: = \pi \: {r}^{2} \times t[/tex]
[tex] = \frac{22}{7} \times 21 \times 21 \times 45 \\ = 62.370 {cm}^{3} [/tex]
[tex]48) \: {324}^{o} r = - 135.67 derajat \: f[/tex]
[tex]49) \: jp \: = \: 2 \frac{1}{2} \: cm \\ = \frac{5}{2} \: cm \\ = 2.5 \: cm = 0.025 \: m[/tex]
S= 1: 400
Js =.... M
Js= s× jp
[tex] = 400 \times 0.025 = 10 \: m[/tex]

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