<br/><img src="https://media.cheggcdn.com/media%2Faef%2Faef72c6f-76a3-4131-b137-5d50303c9309%2Fimage" alt="1. Define an interface, called volu meArea, within which therere: - a static and final variable PI (with the value 3.14159), and two abstract methods volume(double radius) and