Using the cosine rule we can work out the length of the side opposite the indicated right angle which came to be 15mm
then the final answer came to be 163mm^2
Answer:
B
Step-by-step explanation:
Since LMNO is a parallelogram then MN and LO are parallel, thus
∠OLN = ∠MNL = 20° ( corresponding angles )
Wait, do you want me to solve for x or for y??
For y it's,

For x it's,