The area of a rhombus is half the area of the rectangle. The area is the product of these two or as a formula. Then the formula to calculate the area from given diagonals is.
So were essentially proving that the area of a rhombus is 12 times the product of the lengths of its diagonals.
Referencing rhombus ABCD above Let AC d 1 and BD d 2. Here you need to find the sine of the angle but the formula is still straightforward. So were essentially proving that the area of a rhombus is 12 times the product of the lengths of its diagonals. A ½ x d 1 x d 2.