PangPang ToolsRadius 1 m and a 90-degree sector
3.1416 m² circle and 0.7854 m² sectorEnter a circle radius and sector central angle to see area, circumference, sector area and arc length. Input millimetres and centimetres are normalized to metres in the results.
Area & Drawings
Circle and Sector Area Calculator
About this tool
Enter a circle radius and sector central angle to see area, circumference, sector area and arc length. Input millimetres and centimetres are normalized to metres in the results.
Circles & arcs
Choose a task. Inputs stay in this page only.
MAKE IT SIMPLE
Result
Worked examples
MAKE IT SIMPLE
Result
Worked examples
Outer radius (m): 5, Inner radius (m): 3
Ring area: 50.265482 m²Using these sample input values gives the first labelled output above. Assumes concentric circles; inner radius must be smaller than outer radius.
Questions & answers
Can I use the default numbers for purchasing or safety certification?
No. Replace the examples with your real values. Assumes concentric circles; inner radius must be smaller than outer radius.
MAKE IT SIMPLE
Result
Worked examples
Circle radius (m): 4, Central angle (°): 60
Chord length: 4 mUsing these sample input values gives the first labelled output above. For minor arcs with a central angle up to 180 degrees only.
Questions & answers
Can I use the default numbers for purchasing or safety certification?
No. Replace the examples with your real values. For minor arcs with a central angle up to 180 degrees only.