How to create cone volume app

Give the project name (cone volume)
Add 5 linear(H)
Add 4 textview
Add 2 button one is calculate and other is reset
Like this

Then go to on create activity and follow this code

Add number variable
Then add r for radius
Add  h for height
Add vol for volume

Go to first button 1 onclick follow this code

Add button 2 onclick follow this code

Save and run the project
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