Solution
Part 3
For this case we have 6 different terms
Part 4
We can do the following:

Part 5
And we can simplify on this way:

Answer:
y = 9
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin45° = 
sin45° =
= 
Multiply both sides by y
y × sin45° = 9, that is
y ×
= 9
Multiply both sides by 
y = 9
Answer:
C 18
Step-by-step explanation:
1080/60 = 18
Answer:
area 4.5
Step-by-step explanation:
C has the largest Area. It's area is 4.5
hope this helps