The volume of the column is
(π) · (r²) · (length) =
(π) · (0.19 meter)² · (2.6 meters) =
(π) · (0.036 m²) · (2.6 m) =
0.294 m³ .
The density is 2,450 kg/m³ (VERY very dense, heavy concrete)
so the weight of the column is (mass)·(gravity) or
(density) · (volume) · (gravity) =
(2,450 kg/m³) · (0.294 m³) · (9.81 m/s²) =
(2,450 · 0.294 · 9.81) (kg · m³· m) / (m³ · s²) =
7,066 kg-m/s² = 7,066 Newtons .
But 9.81 Newtons = 2.20462 pounds on Earth (the weight of 1 kilogram of mass), so we have
(7,066 N) · (2.205 pound/9.81 N) =
(7,066 · 2.205 / 9.81) pounds =
1,588 pounds .
