Take a cone-shaped part with a diameter of 4 decimeters and a height of 15 decimeters on the ground, and melt it into a cylinder with the same base as it. Find this It's to seek height. What's the process of getting the number.

Take a cone-shaped part with a diameter of 4 decimeters and a height of 15 decimeters on the ground, and melt it into a cylinder with the same base as it. Find this It's to seek height. What's the process of getting the number.

Radius = 4 △ 2 = 2 decimeters
Cone volume: 3.14 × 2 × 2 × 15 △ 3 = 62.8
Cone bottom area: 3.14 × 2 × 2 = 12.56
Because the volume of cone = the volume of cylinder,
Column height = 62.8 △ 12.56 = 5 decimeters