The diameter of a cylindrical construction pipe is 4 ft. If the pipe is 19 ft long, what is its volume?
1 answer:
Answer:
The volume of the pipe is 239 ft³
Step-by-step explanation:
The rule of the volume of a cylinder is V = π r² h, where
- r is the radius of its base
- h is its height
∵ The diameter of a cylindrical construction pipe is 4 ft
∵ The radius is half the diameter
∴ r = × 4 = 2 ft
∵ The pipe is 19 ft long
∴ h = 19 ft
∵ π = 3.14
→ Substitute them in the rule of the volume
∴ V = 3.14(2)²(19)
∴ V = 238.64 ft³
→ Round it to the nearest whole number
∴ V = 239 ft³
∴ The volume of the pipe is 239 ft³
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