C027 · Composite PolygonsISO 128 · 1:1
Stepped Z-Profile — composite figure at 1:1 scale with dimensions, area 26.36 cm²
A = b_c·h_c + 2·(b_a·h_a)

Middle school · TypeLab 2D

Stepped Z-Profile

Stepped Z-Profile: a composite plane figure made of a rectangle 2.6 × 5.4 cm, joined with a rectangle 2.2 × 2.8 cm, joined with a rectangle 2.2 × 2.8 cm. It is a classic middle school geometry problem (“Composite Polygons”). The net area is 26.36 cm² and the total perimeter is 27.2 cm.

Certified measurements (1:1 scale)

Net area
26.36 cm²
Total perimeter
27.2 cm
Bounding box
8.2 × 5.4 cm
Basic shapes
3
Open in TypeLab 2D

Step-by-step decomposition

  1. 1.Baserectangle 2.6 × 5.4 cm14.04 cm²
  2. 2.+rectangle 2.2 × 2.8 cm6.16 cm²
  3. 3.+rectangle 2.2 × 2.8 cm6.16 cm²

Area of each basic shape before the Boolean composition.

How to find the area

Area formula: A = b_c·h_c + 2·(b_a·h_a)

Split the figure into basic shapes, find each area, add the joined parts and subtract the cut-outs: A = 14.04 + 6.16 + 6.16 = 26.36 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.

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