A metal pipe is 77cm long the inner diameter of the cross section is 6 cm and Outer diameter is 7 cm find its volume
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Answer:
786.1835615cm³(accurate)
Step-by-step explanation:
Volume of inner diameter = Area * length =?
Volume of outer diameter = Area * length=?
Cross sectonal area of inner diameter
A= πr² = π(3cm) ²= 28.27cm²
Volume of inner cross section = 28.27cm²*77cm=2176.79cm³
Area of outer diameter = π(3.5cm)² = 38.48cm²
Volume of outer diameter = 38.48cm²*77cm= 2962.96cm³
Volume of pipe = volume of outer diameter - volume of inner diameter = 2962.96cm³-2176.79cm³
= 768.18cm³ ( approx)
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