Both dams equally wide and equally high. The first dam holds back a very large lake, and the second dam holds back a narrow river.
Which dam has to be built more strongly?
a.) the first dam
b.) the second dam
The Attempt at a Solution
i know it would be the second dam that holds back a narrow river, but how can i prove it mathematically/algebraically?
how can i show the answer in ratio? -.-
i need your help please.