The lake problem.
There is a large and irregularly shaped lake on your property. It is of varriable and unknown depth. There are no rivers or streams entering or leaving the lake. How would you fid the volume of water in the lake?
(peida) Kui Sa ootad oma käiku, klõpsa pealehel "Värskenda" järel "muuda", siis pane lehe värskendus 30 sekundile, et Sinu käigukord ilmuks kiiremini nähtavale. (Servant) (näita kõiki vihjeid)