Answers (1)
In Euclidean geometry, a rhombus(◊) (plural rhombi or rhombuses) is a simple (non-self-intersecting) quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. The rhombus is often called a diamond, after the diamonds suit in playing cards which resembles the projection of an octahedral diamond, or a lozenge, though the former sometimes refers specifically to a rhombus with a 60° angle (see Polyiamond), and the latter sometimes refers specifically to a rhombus with a 45° angle. Every rhombus is a parallelogram and a kite. A rhombus with right angles is a square.[1][2] en.wikipedia.org/wiki/Rhombus
Ok, got that memorized? The thing about a rhombus is it is not a specific shape because the angles are not defined. So you don't have enough information there to calculate area. It could be anything from 0 to 64 cm^2.