High school (grades 9–10) · TypeLab 2D
60° Annular Sector
60° Annular Sector: a composite plane figure made of a circular sector of radius 6.4 cm and angle 60°, minus a circle of radius 3.2 cm. It is a classic high school (grades 9–10) geometry problem (“Sectors & Annuli”). The net area is 16.08 cm² and the total perimeter is 16.45 cm.
Certified measurements (1:1 scale)
- Net area
- 16.08 cm²
- Total perimeter
- 16.45 cm
- Bounding box
- 6.4 × 3.63 cm
- Basic shapes
- 2
Step-by-step decomposition
- 1.Basecircular sector of radius 6.4 cm and angle 60°21.45 cm²
- 2.−circle of radius 3.2 cm32.17 cm²
Area of each basic shape before the Boolean composition.
How to find the area
Area formula: A = (α/360)·π·(R² − r²)
The parts overlap or intersect, so the net area (16.08 cm²) comes from the exact Boolean operation rather than from a plain sum of the part areas.
Editable in PowerPoint & Office
The .PPTX file contains native DrawingML shapes: outlines, dimensions and labels stay separate objects you can recolor and edit in PowerPoint, Keynote and Google Slides. The .SVG file is pure vector art at 1:1 scale on an A4 sheet, ready for print, LaTeX and textbook layout.
