A cylindrical steel is 1.5m long, cut into three sections, and the surface area increases by 100.48 square centimeters. What is the volume of the original steel? What is the bottom area?

A cylindrical steel is 1.5m long, cut into three sections, and the surface area increases by 100.48 square centimeters. What is the volume of the original steel? What is the bottom area?


Four bottom areas are added, one bottom area = 100.48 △ 4 = 25.12
Volume = 1.5 × 25.12 = 37.68