A cylindrical timber is three meters long. After it is cut into three equal sections, the surface area increases by 18.84 square centimeters. What is the original volume of this log

A cylindrical timber is three meters long. After it is cut into three equal sections, the surface area increases by 18.84 square centimeters. What is the original volume of this log

3M = 300cm, cut it into three equal sections, add four bottom surfaces, calculate the area of the bottom surface is 18.84 △ 4, and the volume is
18.84 △ 4 × 300 = 4.71 × 300 = 1413 square centimeter

A cylindrical timber is 5 meters long. When it is sawed into 4 sections, the surface area increases by 12 square decimeters. The volume of this timber is______ If it takes nine minutes to cut it into four sections, it takes nine minutes to cut it into six sections______ Minutes

(1) 5 meters = 50 decimeters, 12 △ 2 × 3 × 50, = 12 △ 6 × 50, = 100 (cubic decimeters); (2) 9 △ 4-1 × (6-1), = 9 △ 3 × 5, = 15 (minutes); answer: the volume of this wood is 100 cubic decimeters. It takes 15 minutes to saw it into six sections

A cylindrical log is 2 meters long. After it is cut into three equal sections, its surface area increases by 12.56 meters?

Hello, Wei Chengbao
Increase of bottom surface: (3-1) × 2 = 4
Bottom area: 12.56 △ 4 = 3.14 (M2)
6214 × 0.80006 cubic meters