1000 km of black plastic cylindrical water piping with internal diameter 13 mm and…
Other · Subjective · ISC · Physics · Physical World and Measurement · Significant figures and magnitude
Problem
1000 km of black plastic cylindrical water piping with internal diameter 13 mm and walls of thickness 2 mm is required for a major irrigation project. The piping is made from bulk plastic which weighs 0.86 tonnes per cubic metre. How many tonnes of black plastic are required?