Use the formula.
Area = (1/2)*13*10*sin(72°) ≈ 61.8 units².
Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
Answer:
the answer will be 366:81
Step-by-step explanation:
you will find value of ratio 3:18
=6
then divide 366:61
=6