It is a geometric sequence because it has a ratio 12/4=3, 36/12=3
The equivalent expression of
is 
<h3>How to determine the
equivalent expression?</h3>
The complete question is in the attached image
The expression is given as:

Subtract 11 from both sides of the equation

This gives

Hence, the equivalent expression of
is 
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Answer:
Radius of circle C= 3in
Step-by-step explanation:
We are given that a circle C .
Measure of an angle ACB=
radians
Measure of minor arc=
in
We have to find the radius of circle C.
We know that

Where
in radians
Substitute the value in the given formula


Hence, the radius of circle C=3 in
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