38.5 Square units
84
In parallelogram ABCD, AC=BD. Is ABCD a rectangle?
Area of a rhombus: base times perpendicular height Or area of a rhombus: 0.5 times product of its diagonals
never
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38.5
58.5
31.5
31.5 square units
31.5 Square Units
A = (1/2)(ac)(bd) = (1/2)(8)(9) = 36
The 2 lengths that you described are diagonals. The area of a rhombus when you know the diagonals is half the product of the diagonals: Area = (1/2) * ( 12 * 7) = 42.
84
A rhombus has two lines of symmetry. They are also called its diagonals. Suppose there is a rhombus ABCD AC and BD are its lines of symmetry.
The area of a rhombus can be calculated using the formula: Area = (1/2) × d1 × d2, where d1 and d2 are the lengths of the diagonals. In this case, AC (d1) is 9 and BD (d2) is 13. Therefore, the area = (1/2) × 9 × 13 = 58.5 square units.
15 units
5 units