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Sagot :
Answer:
It tells you that 1000g are in 1 kg. All you need to do is convert your 15 kg to 15000 g.
Answer:
Step-by-step explanation:
1 kg = 1000 g
15 Kg = 15 *1000 = 15000 g
7.75 g = 1 cm³
1 g = 1 ÷ 7.75 cm³
15000 g = [tex]\frac{1}{7.75}*15000 = 1935.48[/tex]
= 1935 cm³
Inner diameter = 6 cm
Inner radius = r = 6/2 = 3 cm
Outer radius = R = inner radius + thickness
R = 3 + 2 = 5 cm
Volume of cylindrical pipe = 1935 cm³
[tex]\pi h*(R +r)(R - r) = 1935\\\\3.14 * h *( 5 + 3)(5 - 3) = 1935 \\\\3.14 * h * 8 *2=1935\\\\h = \frac{1935}{3.14*8*2}\\\\h = 38.52 = 39[/tex]
h = 39 cm
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