The radius of a circle is 4 kilometers. What is the area of a sector bounded by a 45° arc?
2 answers:
You might be interested in
This circle is given in standard form 
, where 
is the ordered pair for the center of the circle.
Notice that in the equation, we have
and 
. When writing the ordered pair alone, we have to remember to flip the sign.
Therefore, we have
.
Notice that in the equation, we have
Therefore, we have