How much wood does it take to cut a cylinder with a circumference of 12.56dm and a height of 6dm into the largest cone

How much wood does it take to cut a cylinder with a circumference of 12.56dm and a height of 6dm into the largest cone

Cylinder radius = 12.56 △ 2 △ 3.14 = 2 decimeters high = 6 decimeters cut volume = (1-3 / 1) × cylinder volume = 2 / 3 × 3.14 × 2 × 2 × 6 = 50.24 cubic decimeters ~ Yike forever 523 answers for you, I wish you learning progress ~ ~ ~ ~ if you agree with my answer, Please click the [adopt as a satisfactory answer] button in time ~ ~ the mobile phone questioner can comment "satisfied" on the client ~ ~ ~ your adoption is my driving force ~ ~ ~ if there are any new questions, please ask me for help. The answer is not easy, please understand~~

How much wood should be removed when a cylinder with a circumference of 12.56dm and a height of 6dm is cut into the largest cone

V (cylinder) = π r2h = 3.14 × 22 × 6 = 75.36dm3

A cylinder and a cone are equal in height, and the volume difference is 12.56 cubic meters?

It is known that the volume ratio of a cylinder with equal base and height to a cone is 3:1, so 12.56 should correspond to 3-1 = 2 parts, one part is 12.56 / 2 = 6.28 (M3), three parts are cylinder, 6.28 * 3 = 18.84 (M3), and 6.28 * 1 = 6.28 (M3) for cone