A cylindrical steel is 1 meter long and 1 cm in cross-sectional diameter. How many cubic centimeters is the volume of this steel? If each cubic centimeter of steel weighs 7.5 grams, how many kilograms does this steel weigh?

A cylindrical steel is 1 meter long and 1 cm in cross-sectional diameter. How many cubic centimeters is the volume of this steel? If each cubic centimeter of steel weighs 7.5 grams, how many kilograms does this steel weigh?

The volume of this steel is 3.14 × 0.5 × 0.5 × 100 = 78.5 cubic centimeter
This steel weighs 78.5 × 7.5 = 588.75g = 0.58875kg