{"id":8403,"date":"2023-10-23T06:02:00","date_gmt":"2023-10-23T05:02:00","guid":{"rendered":"https:\/\/exos.education\/fr\/exercice-mathematiques-aires-formes-geometriques-niveau-cm\/"},"modified":"2023-08-21T14:54:49","modified_gmt":"2023-08-21T13:54:49","slug":"exercice-mathematiques-aires-formes-geometriques-niveau-cm","status":"publish","type":"post","link":"https:\/\/exos.education\/fr\/exercice-mathematiques-aires-formes-geometriques-niveau-cm\/","title":{"rendered":"Exercice Mathematiques Aires Formes G\u00e9ometriques Niveau CM"},"content":{"rendered":"

Points importants du cours<\/p>\n

Avant de commencer notre exercice, rappelons quelques points essentiels sur les aires des formes g\u00e9om\u00e9triques:<\/p>\n

1. L’aire est une mesure de surface qui repr\u00e9sente l’espace \u00e0 l’int\u00e9rieur d’une figure g\u00e9om\u00e9trique.
2. Elle se calcule en unit\u00e9s carr\u00e9es (cm\u00b2, m\u00b2\u2026).
3. Pour un rectangle ou un carr\u00e9 : Aire = longueur \u00d7 largeur.
4. Pour un triangle : Aire = base \u00d7 hauteur\/2.
5. Pour un cercle : Aire = \u03c0 \u00d7 (rayon)\u00b2.<\/p>\n

Exercice \"<\/p>\n

Instructions: Dans cet exercice QCMtu devras choisir la bonne r\u00e9ponse parmi les options propos\u00e9es afin de d\u00e9terminer l’aire des figures g\u00e9om\u00e9triques suivantes.<\/p>\n

1.Quelle est l’aire d’un rectangle mesurant 5 cm de long et 3 cm de large?
a)8 cm\u00b2
b)15 cm\u00b2
c)20 cm\u00b2<\/p>\n

2.Quelle est l’aire d’un triangle avec une base de 6 m et une hauteur de 4m ?
a)10 m\u00b2
b)12 m\u00b2
c)24 m\u00b2<\/p>\n

3.Si le rayon d\u2019un cercle mesure 7mmquelle est son aire ?
a)49\u03c0 mm^2
b)42\u03c0 mm^2
c)14\u03c0 mm^2 <\/p>\n

R\u00e9ponses \"<\/p>\n

1.L’Aire du rectangle est: b )15cm^2 ( calcul r\u00e9alis\u00e9 en faisant 5cm x 3cm)<\/p>\n

2.L’Aire du triangle est:Au choix bien s\u00fbr!b )12m^2( calcul r\u00e9alis\u00e9e en faisant (6m x 4m)\/2)<\/p>\n

3.L’Aire du cercle est:a )49\u03c0 mm^2 (car pour le cercle A= \u03c0r[r=rayon]^21 donc ici A= \u03c0x(7×7)=49\u03c0)<\/p>\n

Adaptation aux \u00e9l\u00e8ves \" <\/p>\n

Ce type d’exercices ne n\u00e9cessite pas d’adaptation particuli\u00e8re.En effet il convient \u00e0 tous les \u00e9l\u00e8ves correspondants au niveau CM2 puisqu’il s’appuie sur leur capacit\u00e9 \u00e0 appliquer la formule appropri\u00e9e pour calculer l’aire des figures g\u00e9om\u00e9triques communes .<\/p>\n

Titre\": Exercice Mathematiques Aires Formes G\u00e9ometriques Niveau CM<\/p>\n","protected":false},"excerpt":{"rendered":"

Points importants du cours Avant de commencer notre exercice, rappelons quelques points essentiels sur les aires des formes g\u00e9om\u00e9triques: 1. L’aire est une mesure de surface qui repr\u00e9sente l’espace \u00e0 l’int\u00e9rieur d’une figure g\u00e9om\u00e9trique. 2. Elle se calcule en unit\u00e9s carr\u00e9es (cm\u00b2, m\u00b2\u2026). 3. Pour un rectangle ou un carr\u00e9 : Aire = longueur \u00d7 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[7,17,5,4,318,1],"tags":[],"class_list":["post-8403","post","type-post","status-publish","format-standard","hentry","category-mathematiques","category-cm2","category-niveaux","category-matieres","category-pas-dadaptation-particuliere","category-exercices-pedagogiques-imprimables-et-gratuits"],"_links":{"self":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/comments?post=8403"}],"version-history":[{"count":0,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8403\/revisions"}],"wp:attachment":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/media?parent=8403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/categories?post=8403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/tags?post=8403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}