The two adjacent sides of a parallelogram are 12 cm and 5 cm respectively. If one of the diagonals is 13 cm long, then what is the area of the parallelogram?
Answer & explanation
Correct answer: option 1
In the parallelogram ABCD,
The numbers 5, 12, 13 are triplet so angle D is 90°
This parallelogram is a rectangle.
Area of ABCD = product of sides = AD x CD
= 5 x 12 = 60 cm²