Answer:
A cardioid
Step-by-step explanation:
A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.
The equation of vertical cardioid is
± 
Given the polar curve is
4 
This is an equation of vertical cardioid.
So, it represents a cardioid.
Answer:
C. 2.50, 2.51, 5.00, 5.01, 7.50, 9.00, 10.00
Step-by-step explanation:
Answer: 14
Explanation: The radius is half of the value of the circumference.