A Water Tank Is Filled to a Depth of $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

Multiple Choice

A water tank is filled to a depth of 10 m, and the bottom of the tank is 20 m above ground. A water-filled hose that is 2.0 cm in diameter extends from the bottom of the tank to the ground, but no water is flowing in this hose. The water pressure at ground level in the hose is closest to which of the following values? The density of water is $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

A) $2.0 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { m } ^ { 2 }$
B) $3.9 \times 10 ^ { 5 } \mathrm {~N} / \mathrm { m } ^ { 2 }$
C) $9.2 \mathrm {~N} / \mathrm { m } ^ { 2 }$
D) The question cannot be answered because the cross sectional area of the tank is needed.