The four polders with their areas of fertile soil would be: (I) North-west polder, area 53,599 acres; fertile soil, 46,189 acres.
A lever (/ËliËvÉr/ or US /ËlÉvÉr/) is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the location of fulcrum, load and effort, the lever is divided into three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage.
leverage. 1  the action of a lever, a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third. 2  the mechanical advantage or power gained by using a lever.