find the surface area of a cone in typescript

index.ts
function coneSurfaceArea(radius: number, height: number): number {
  const baseArea = Math.PI * Math.pow(radius, 2);
  const slantHeight = Math.sqrt(Math.pow(radius, 2) + Math.pow(height, 2));
  const lateralArea = Math.PI * radius * slantHeight;
  const surfaceArea = baseArea + lateralArea;
  return surfaceArea;
}
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index.ts
const radius = 5;
const height = 10;
const surfaceArea = coneSurfaceArea(radius, height);
console.log(surfaceArea); // Output: 235.61944901923448
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