Please answer in c$++$

Question $3$

$10$ pts

The following question has three phases.

Phase $1$:

Write a class representing a $2D$ point.

Have the class consist of two fields representing it's coordinate, ideally $x$ and $y.$

Let the fields $($data members$)$ be public, but make sure that they don't fall victims to immutability so set the fields to be constant.

Write a method $($function members$)$ that finds the distance from one point to the other.

Write a method that finds the slope given another point.

Phase $2$

Using only instances of the point class, write a class representing a circle object.

Let the fields be public, but make sure that they don't fall victims to immutability so set the fields to be constant.

Provide an area and a perimeter method $($function member$).$

Phase $3$:

Using only instances of the of circle class write a sphere class.

Let the fields $($data members$)$ be public, but make sure that they don't fall victims to immutability so set the fields to be constant.

Provide a volume and surface area method $($function member$).$

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