Calcolatore del Cerchio Avanzato Gratuito
Calcola area, circonferenza, diametro e tutte le proprieta di un cerchio. Strumento avanzato e completo.
deg
Area
78.5398
Circonferenza31.4159
Diametro10.0000
Arc Length7.8540
Formula
Circle Calculations
Formulas
A sector is a "pie slice" of the circle defined by a central angle.
Esempio Risolto
A circle with radius 5, find area and a 90-degree sector.
- 01Area = pi × 25 ≈ 78.5398
- 02Circumference = 2 × pi × 5 ≈ 31.4159
- 03Sector area = 78.5398 × 90/360 ≈ 19.6350
- 04Arc length = 31.4159 × 90/360 ≈ 7.8540
Domande Frequenti
What is a sector?
A sector is the region between two radii and an arc. Think of it as a "pie slice" of the circle.
How do I find the area if I know the diameter?
Divide the diameter by 2 to get the radius, then use A = pi × r². Alternatively, A = pi × d²/4.
What is the relationship between arc length and sector area?
Both are proportional to the central angle. Sector area = (1/2) × r × arc length.
Impara