---
title: If the perimeter is 26 cm and the length is 8 cm, then length + widt… — A rectangle's area from its perimeter · tree and pragmatics
description: If the perimeter is 26 cm and the length is 8 cm, then length + width = 26 ÷ 2 = 13, the width is 13 - 8 = 5 cm, and the area is 8 × 5 = 40 square centimetres. Who acts: perimeter, length, width. A sentence of the lesson «A rectangle's area from its perimeter» of the lessons course of Mova's primary
---

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# A rectangle's area from its perimeter, sentence 1

<!-- .ven lang=en -->
If the perimeter is 26 cm and the length is 8 cm, then length + width = 26 ÷ 2 = 13, the width is 13 - 8 = 5 cm, and the area is 8 × 5 = 40 square centimetres.

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**Who acts:** perimeter, length, width · **What happens:** be · **To what, where:** 26 cm, 8 cm, 13 5 cm

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This is a sentence of the lesson «A rectangle's area from its perimeter» of the lessons course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (perimeter, length, width), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:lessons:146-area-from-perimeter.lesson:1
# text = If the perimeter is 26 cm and the length is 8 cm, then length + width = 26 ÷ 2 = 13, the width is 13 - 8 = 5 cm, and the area is 8 × 5 = 40 square centimetres.
# source = school lesson (ours)
# course = lessons
# lesson = 146-area-from-perimeter.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R2-punct-next ×1, R5-strong ×1, R7-rel-agree ×3
1	If	if	SCONJ	IN	_	6	mark	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	perimeter	perimeter	NOUN	NN	Number=Sing	6	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
5	26	26	NUM	CD	NumForm=Digit|NumType=Card	6	nummod	_	_
6	cm	cm	NOUN	NNS	Number=Plur	0	root	_	_
7	and	and	CCONJ	CC	_	12	cc	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	length	length	NOUN	NN	Number=Sing	12	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
11	8	8	NUM	CD	NumForm=Digit|NumType=Card	12	nummod	_	_
12	cm	cm	NOUN	NNS	Number=Plur	6	conj	_	_
13	,	,	PUNCT	,	_	15	punct	_	_
14	then	then	ADV	RB	PronType=Dem	15	advmod	_	_
15	length	length	NOUN	NN	Number=Sing	6	conj	_	_
16	+	+	SYM	SYM	_	17	cc	_	Agree=R7-rel-agree|Haiku=17:case
17	width	width	NOUN	NN	Number=Sing	15	conj	_	Agree=R7-rel-agree|Haiku=15:nmod
18	=	=	SYM	SYM	_	19	case	_	_
19	26	26	NUM	CD	NumForm=Digit|NumType=Card	6	nmod	_	_
20	÷	÷	SYM	SYM	Number=Sing	19	nmod:unmarked	_	_
21	2	2	NUM	CD	NumForm=Digit|NumType=Card	20	flat	_	_
22	=	=	SYM	SYM	_	23	case	_	_
23	13	13	NUM	CD	NumForm=Digit|NumType=Card	19	nmod	_	_
24	,	,	PUNCT	,	_	33	punct	_	Agree=R2-punct-next|Haiku=6:punct
25	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
26	width	width	NOUN	NN	Number=Sing	33	nsubj	_	_
27	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	33	cop	_	_
28	13	13	NUM	CD	NumForm=Digit|NumType=Card	33	nummod	_	_
29	-	-	SYM	SYM	ExtPos=ADP	30	case	_	_
30	8	8	NUM	CD	NumForm=Digit|NumType=Card	28	nmod	_	_
31	=	=	SYM	SYM	_	32	case	_	_
32	5	5	NUM	CD	NumForm=Digit|NumType=Card	33	nummod	_	Agree=R5-strong|Haiku=28:nmod
33	cm	cm	NOUN	NNS	Number=Plur	6	conj	_	_
34	,	,	PUNCT	,	_	40	punct	_	_
35	and	and	CCONJ	CC	_	40	cc	_	_
36	the	the	DET	DT	Definite=Def|PronType=Art	37	det	_	_
37	area	area	NOUN	NN	Number=Sing	40	nsubj	_	_
38	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	40	cop	_	_
39	8	8	NUM	CD	NumForm=Digit|NumType=Card	40	nummod	_	_
40	×	×	SYM	SYM	Number=Sing	33	acl	_	_
41	5	5	NUM	CD	NumForm=Digit|NumType=Card	40	flat	_	_
42	=	=	SYM	SYM	_	45	case	_	_
43	40	40	NUM	CD	NumForm=Digit|NumType=Card	45	nummod	_	_
44	square	square	ADJ	JJ	Degree=Pos	45	amod	_	Agree=R7-rel-agree|Haiku=45:compound|HaikuPos=NOUN:NN:Number=Sing
45	centimetres	centimetre	NOUN	NNS	Number=Plur	41	nmod	_	_
46	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | the perimeter | 26 cm and 8 cm and length + width and 13 5 cm |  |  |  | = 26 = 13 | tree rules |
| 2 | **is a** | present | the length | 8 cm |  |  |  |  | tree rules |
| 3 | **is a** | present | the width | 13 5 cm |  |  |  |  | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:lessons:146-area-from-perimeter.lesson:1`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R2-punct-next ×1, R5-strong ×1, R7-rel-agree ×3. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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