A cone tool used by construction workers is made of steel. Its bottom circumference is 12.56 cm and its height is 6 cm. If the steel weighs 7.8 g per cubic centimeter, how many kg does the tool weigh?

A cone tool used by construction workers is made of steel. Its bottom circumference is 12.56 cm and its height is 6 cm. If the steel weighs 7.8 g per cubic centimeter, how many kg does the tool weigh?


The volume of sand pile: 13 × 3.14 × (12.56 ﹣ 3.14 ﹣ 2) 2 × 6, = 13 × 3.14 × 22 × 6, = 3.14 × 4 × 2, = 25.12 (cubic centimeter), the weight of the tool: 25.12 × 7.8 = 195.936 (g); a: the weight of the tool is 195.936 kg