Answer:
C= 37.69ft
A= 113.09ft
Step-by-step explanation:
Circumference=
=37.69
Area=
Area = pi * 6 ^2
Area =113.09
12% per year means 6% every6 months
so do 850 × 0.06= 51USD
Answer:
The correct answer is A which is

Step-by-step explanation:
The angle of elevation from the submarine to the boat is
.
This is the angle through which an observer from the submarine will raise the head before seeing the boat.
See diagram in the attachment for illustration.
Im going to assume you know the formula.
sooo.
x= -11 +- √ (11)² -4 (1) (-15)
---------------------------------
2(1)
= -11 +- √121- (-60)
-------------------------
2
= -11 +- √181
-----------------
2
= -11 +- 13.45
-----------------
2
Either: Or:
X = -11 - 13.45
x = -11 + 13.45 ---------------
2
----- ----------
2
x = 1.23 x= -12.23