Diagram illustrating width of outcrop AB of the bed, the thickness of which is AC; its depth at X is…

Rectangle with dimensions labeled. Rectangle can be used to calculate area.

An illustration of a rectangle with lengths a and b and area ab.

An illustration of composite rectangle with lengths a, b, and c with area ac + bc. This illustration…

Right triangle ABC with angles A, B, C to be used for finding distance across a river. This is a trigonometry…