A Trough Is Filled with a Liquid of Density $855 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

Multiple Choice

A trough is filled with a liquid of density $855 \mathrm {~kg} / \mathrm { m } ^ { 3 }$ . The ends of the trough are equilateral triangles with sides $8 \mathrm {~m}$ long and vertex at the bottom. Find the hydrostatic force on one end of the trough.

A) $8.36 \times 10 ^ { 5 } \mathrm {~N}$
B) $5.36 \times 10 ^ { 5 } \mathrm {~N}$
C) $6.36 \times 10 ^ { 5 } \mathrm {~N}$
D) $7.36 \times 10 ^ { 5 } \mathrm {~N}$
E) $4.36 \times 10 ^ { 5 } \mathrm {~N}$