Finding the Area of a Parallelogram Given the Diagonals

The two diagonals of the parallelogram B are 18cm and 10cm. What is the parallelogram’s area?

A = (\frac{1}{2})*d_{1}*d_{2} = \frac{1}{2}*18*10 = 90 cm^{2}

A_{B} = 90 cm^{2}