Answer
ratio = 1 X $10^{36}$
Work Step by Step
Wapentake = w
Barn = b
acre = 1 and hide = h.
1 h = 110 a
ratio = 25 w:11 b
25 w = 25 * (100 h/1 w) * (110 a/ 1 h)* (4047 sq mtr/ 1 a) = 1.113 x $10^{9}$ sq mtrs
11 b = 11 * (1 x $10^{-28}$) = 11 X $10^{-28}$ sq mtrs
ratio = (1.113 x $10^{9}$ sq mtrs)/(11 X $10^{-28}$ sq mtrs) = 1 X $10^{36}$
