---
title: The area of a shape made of rectangles — a lesson of Mova's school · trees and pragmatics
description: «The area of a shape made of rectangles», a lesson of the lessons course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: An L-shaped figure can be seen in two ways: as two rectangles side by side, or as a big rectangle with a corner cut away.
---

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# The area of a shape made of rectangles

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Lesson 148 of the lessons course of Mova's primary school: 4 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/lessons/148-composite-shapes/0/) — An L-shaped figure can be seen in two ways: as two rectangles side by side, or as a big rectangle with a corner cut away.
- [1](https://md.mova.elamur.ai/free/en/corpora/school/lessons/148-composite-shapes/1/) — A 10 by 8 rectangle with a 4 by 3 corner cut away has area 10 × 8 - 4 × 3 = 80 - 12 = 68.
- [2](https://md.mova.elamur.ai/free/en/corpora/school/lessons/148-composite-shapes/2/) — Cut it into two rectangles instead, 10 by 5 and 6 by 3: 50 + 18 = 68, the same.
- [3](https://md.mova.elamur.ai/free/en/corpora/school/lessons/148-composite-shapes/3/) — Careful: the perimeter of such an L is still 2 × (10 + 8) = 36, the cut corner does not change it.

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