Pentadecagon
Calculate the area of a regular 15-side polygon inscribed in a circle with a radius r = 4. Express the result to two decimal places.
  Final Answer:

Tips for related online calculators
 See also our trigonometric triangle calculator.
 You need to know the following knowledge to solve this word math problem:
algebraplanimetricsgoniometry and trigonometryUnits of physical quantitiesGrade of the word problem
We encourage you to watch this tutorial video on this math problem: video1
 Related math problems and questions:
- Hexagon A 
 Calculate the area of a regular hexagon inscribed in a circle with radius r=15 cm. - Calculate  25621  
 Calculate the area of a regular hexagon inscribed in a circle with a radius r = 7 cm. - Hexagon 
 Draw a regular hexagon inscribed in a circle with a radius r=15 cm. What is its perimeter? - Pentagon 
 Calculate the length of a regular pentagon's side, circumference, and area, inscribed in a circle with a radius r = 6 cm. - Diagonals of pentagon 
 Calculate the diagonal length of the regular pentagon: a) inscribed in a circle of radius 12dm; b) a circumscribed circle with a radius of 12dm. - Dodecagon 
 Calculate the size of the smaller angles determined by lines A1 A4 and A2 A10 in the regular dodecagon A1A2A3. .. A12. Express the result in degrees. - 30-gon 
 The radius of the inscribed circle is 15cm at a regular 30-gon. Find the side length a, circle radius R, circumference, and area. 
