Question

Tolong jawabannya ya nomor 9 dan 10

Answer 1

9.T = 2 m = 20 dmr = 7 dmdebit = 7 liter/menit = 7 dm³/menit
V = πr²T
V = 22/7 x 7 x 7 x 20V = 3080 dm³

t = V/debit
t = 3080/7
t = 440 menit = 7 jam 20 menit


10.d = 100 cmketebalan = 10 cmT = 60 cm

diameter ruang kosong = 100 - 2 x 10 = 80 cm => r = 40 cm

a.
V ruang kosong = πr²T
V = 3,14 x 40 x 40 x 60
V = 301440 cm³

b.
V beton luar = V tabung total - V ruang kosong
V = 3,14 x 50 x 50 x 60 - 301440
V = 471000 - 301440
V = 169560 cm³

Answer 2

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