Please answer it . urgent

Dear student,​​​​

Given: The atmospheric pressure at one point is noted to be 70 cm of Hg.

 70 cm= 0.70 m 
 
The denisty of mercury is 13.6 times the density of water.
 d_m = 13.6 d_w
Atmospheric pressure P = h x d x g 
 
Let the height upto which the mercury is raised be h_m and the density of mercury be d_m.
Let the height upto which the water will be raised be h_w and the density of water be d_w.
 
h_m x d_m x g =h_w x d_w x g 
h_m x d_m = h_w x d_w
 

Thus, the water will raise to the height of 9.52 metres which makes it inconvenient to be used in barometer. 

Regards