<script>
var geom = kendo.geometry;
var circle = new geom.Circle([10, 10], 5);

console.log(circle.radius); // 5

// Set new radius
var result = circle.setRadius(15);
console.log(circle.radius); // 15
console.log(result === circle); // true (returns the same instance)

// Chain method calls
circle.setRadius(25).setCenter([20, 20]);
console.log(circle.radius); // 25
console.log(circle.center.x); // 20
console.log(circle.center.y); // 20
</script>