C011 · Orthogonal ProfilesISO 128 · 1:1
Primary school · TypeLab 2D
Open U-Shape
Open U-Shape: a composite plane figure made of a rectangle 7.2 × 6 cm, minus a rectangle 3.6 × 4 cm. It is a classic primary school geometry problem (“Orthogonal Profiles”). The net area is 28.8 cm² and the total perimeter is 34.4 cm.
Certified measurements (1:1 scale)
- Net area
- 28.8 cm²
- Total perimeter
- 34.4 cm
- Bounding box
- 7.2 × 6 cm
- Basic shapes
- 2
Step-by-step decomposition
- 1.Baserectangle 7.2 × 6 cm43.2 cm²
- 2.−rectangle 3.6 × 4 cm14.4 cm²
Area of each basic shape before the Boolean composition.
How to find the area
Area formula: A = B·H − b·h
Split the figure into basic shapes, find each area, add the joined parts and subtract the cut-outs: A = 43.2 − 14.4 = 28.8 cm².
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.
