There is a conical part made of steel. The circumference of the bottom surface is 12.56 cm and the height is 6 cm. If each cubic centimeter of steel weighs 7.8 g, how much is the weight of the part

12.56÷3.14÷2
=4÷2
2(cm)
2×2×3.14×6×7.8
4×3.14×7.8
=12.56×6×7.8
=75.36×7.8
=587.808 (g)
587.808 △ 3 = 195.936 (g)
About 196 grams

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