2010 · Q86
The inner and outer radii of a 7 m long hollow iron right circular cylindrical pipe are 2 cm and 4 cm respectively. If 1000 cm3 of iron weighs 5 kg, what is the weight of the pipe ?
Elementary MathematicsMensuration
- A264 kg
- B132 kg
- C396 kg
- DNone of the above
Explanation
Volume=8400π cm³; weight=42π=132 kg.