# Divergence of a vector field

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## Homework Statement

I attempted to solve the problem. I would like to know if my work/thought process or even answer is correct, and if not, what I can do to fix it.
I am given:

Calculate the divergence of the vector field :
A=0.2R^(3)∅ sin^2(θ) (R hat+θ hat+ ∅ hat)

## Homework Equations

[/B]
The equation I used was the divergence of a vector field in spherical coordinates:
The file is attached:

## The Attempt at a Solution

The file is attached:

#### Attachments

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## Homework Statement

I attempted to solve the problem. I would like to know if my work/thought process or even answer is correct, and if not, what I can do to fix it.
I am given:

Calculate the divergence of the vector field :
A=0.2R^(3)∅ sin^2(θ) (R hat+θ hat+ ∅ hat)

## Homework Equations

[/B]
The equation I used was the divergence of a vector field in spherical coordinates:
The file is attached:

## The Attempt at a Solution

The file is attached:
$$\dfrac{1}{C} \ \dfrac{\partial A}{\partial t}$$