the inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is 28 CM the length of the pipe is 35 cm find the mass of the pipe is 1 cm cube of wood has a mass of 0.6 gram
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Answer:
Mass of pipe = 3432 grams or 3 kg 432 gram
Step-by-step explanation:
Inner diameter = 24 cm
Radius, r = 24/2 = 12 cm
Outer diameter = 28 cm
Radius, R = 28/2 = 14 cm
Length of pipe, h = 35 cm
Volume of hollow cylinder = π(R² - r²)h cu. units
= {22(14² - 12²)35}/7 cm³
= 22(196 - 144)5 cm³
= 22 × 52 × 5 cm³
= 5720 cm³
Now,
1 cm³ = 0.6 gram
5720 cm² = 0.6 × 5720 = 3432 grams
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