find the area of a regular polygon circumscribed around a circle in javascript

To find the area of a regular polygon circumscribed around a circle, we can use the following formula:

A = (0.5 * N * R^2 * sin(360/N))

where A is the area of the polygon, N is the number of sides, and R is the radius of the circumscribed circle.

To implement this formula in JavaScript, we can define a function that takes in the number of sides and the radius as parameters and returns the area of the polygon:

index.tsx
function findPolygonArea(numOfSides, radius) {
  const numerator = 0.5 * numOfSides * radius * radius;
  const denominator = Math.sin((360 / numOfSides) * (Math.PI / 180));
  return numerator * denominator;
}

// Example usage:
console.log(findPolygonArea(6, 5)); // Output: 64.9519052838329
292 chars
9 lines

In the example above, findPolygonArea(6, 5) calculates the area of a regular hexagon that is circumscribed around a circle with a radius of 5 units. The output is approximately 64.95 square units.