Is the volume of this wood 3000m? .

2. 5×4.5×2=45000 (length)

The volume is 45000L l l.

3, 5cm = 0.05m.

50× 10×0.05=25(m？ )

Need a normal 25m? sand

25 ÷ 2 = 12 (times) ... 1 (m? )

12+ 1 = 13 (times)

It needs at least 13 times.