What is the volume of a steel pipe 150 cm long, 10 cm in diameter and 8 cm in diameter? Each cubic meter of steel weighs 7.8 tons. How many kilograms does this steel pipe weigh?

What is the volume of a steel pipe 150 cm long, 10 cm in diameter and 8 cm in diameter? Each cubic meter of steel weighs 7.8 tons. How many kilograms does this steel pipe weigh?


A: its volume is 4239 cubic centimeter. (2) 4239 cubic centimeter = 0.004239 cubic meter, 0.004239 × 7.8 = 0.0330642 (ton), 0.0330642 ton = 33.0642 kg