The iron cone of a cone has a bottom radius of 5cm, a height of 10cm, 6.8g per cubic centimeter and a weight of several grams? Come on, there's a prize

The iron cone of a cone has a bottom radius of 5cm, a height of 10cm, 6.8g per cubic centimeter and a weight of several grams? Come on, there's a prize

The volume is
5 × 5 × 3.14 × 10 × 1 / 3 = 261.67 (cm3)
The weight is
6.8 × 261.67 = 1779.3 (g)

The ground diameter of a cone is 6cm, the surface area is 5cm square, and the volume is cubic

Pass by
Volume: 6 △ 2 = 3 (CM) 1 / 3 * 3.14 * 3 square * 5 = 47.1 (CM cube)
Surface area of cone = 3 square * 3.14 + side area
Side area = 1 / 2 × generatrix length × 3.14 * 6 = 3.14 × cone bottom radius × generatrix length

When the height of a cone changes from 2 cm to 10 cm, the volume of the cone changes from what to what cubic centimeter

The original cone volume v = 1 / 3 * 3.14 * 25 * 2 = 52.3cm & # 179;
Later, the volume of cone was v = 1 / 3 * 3.14 * 25 * 10 = 261.7cm & # 179;