Traditional Culture Encyclopedia - Traditional culture - What is the correct calculation method of 5m long and 25cm diameter cylindrical wood? How many cubic meters are there?

What is the correct calculation method of 5m long and 25cm diameter cylindrical wood? How many cubic meters are there?

First of all, it is necessary to find out whether it is logs or logs.

Logarithm multiplies the bottom area by the height.

Logs have a special volume table, with a diameter of 0.3 16 of 5m and 25m.

The formula is 0.00007854 * l * (d+0.5 * l+0.005 * (l) 2+0.000124 * l * (14-l) 2) * (d-10).

D is the diameter.

L is the length.