C037 · Arcs & SemicirclesISO 128 · 1:1
Geometric Heart — composite figure at 1:1 scale with dimensions, area 37.77 cm²
A = l² + π·(l/2)² · 2p = 2l + π·l

Middle school · TypeLab 2D

Geometric Heart

Geometric Heart: a composite plane figure made of a square with side 4.6 cm, joined with a semicircle of radius 2.3 cm, joined with a semicircle of radius 2.3 cm. It is a classic middle school geometry problem (“Arcs & Semicircles”). The net area is 37.77 cm² and the total perimeter is 23.65 cm.

Certified measurements (1:1 scale)

Net area
37.77 cm²
Total perimeter
23.65 cm
Bounding box
7.18 × 7.85 cm
Basic shapes
3
Open in TypeLab 2D

Step-by-step decomposition

  1. 1.Basesquare with side 4.6 cm21.16 cm²
  2. 2.+semicircle of radius 2.3 cm8.31 cm²
  3. 3.+semicircle of radius 2.3 cm8.31 cm²

Area of each basic shape before the Boolean composition.

How to find the area

Area formula: A = l² + π·(l/2)² · 2p = 2l + π·l

Split the figure into basic shapes, find each area, add the joined parts and subtract the cut-outs: A = 21.16 + 8.31 + 8.31 = 37.77 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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