Answer:
Diameter14
Using the formulas
A=πr2
d=2r
Solving for A
A=1
4πd2=1
4·π·142≈153.93804m²
Step-by-step explanation:
y = 5
That "+5" elevates the graph of this cosine function 5 units above the x axis, and thus the "midline" you wanted is y = 5.
Answ34.5