When a cylinder with a height of 10 cm is sawed off 4 cm horizontally, the surface area of the remaining cylinder is reduced by 12.56 square cm. What is the volume of the original cylinder? Use formulas instead of equations~

When a cylinder with a height of 10 cm is sawed off 4 cm horizontally, the surface area of the remaining cylinder is reduced by 12.56 square cm. What is the volume of the original cylinder? Use formulas instead of equations~

customary
The radius of the bottom surface R,
Only the side area is reduced,
Bottom perimeter * 2 = 12.56,
2πR*2=12.56,
R = 12.56 / 4 / 3.14 = 1 (CM)
customary
Volume = π R & # 178; * height = 3.14 * 1 & # 178; * 8 = 25.12 (cm3) ok

Elden Ring Premiere

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