{"id":202956,"date":"2023-11-02T00:29:55","date_gmt":"2023-11-02T03:29:55","guid":{"rendered":"http:\/\/clubes.obmep.org.br\/blog\/?page_id=202956"},"modified":"2023-11-02T04:52:26","modified_gmt":"2023-11-02T07:52:26","slug":"problema-area-total","status":"publish","type":"page","link":"https:\/\/clubes.obmep.org.br\/blog\/problema-area-total\/","title":{"rendered":".Problema: \u00c1rea total"},"content":{"rendered":"<p class=\"g2\" ><strong><a href=\"http:\/\/clubes.obmep.org.br\/blog\/?p=204581\" rel=\"noopener\" target=\"_blank\">&#9999; <span style=\"color:#A0522D;font-size:14px;\">Link do problema para dispositivos da <em>Apple<\/em>.<\/span><\/a><\/strong><\/p>\n<div class=\"g1n\" style=\"line-height:25px;padding-bottom:15px\">\n<p class=\"tit\" style=\"line-height:25px;margin:10px\">Problema<br \/>\n<span style=\"font-size:12px;color:#800000\"> (Indicado a partir do 2\u00ba ano do E. M.)<\/span><\/p>\n<hr style=\"height:1px; width:100%;background-color:#800000; margin-top: 10px; margin-bottom: 20px;border: 0 none\"\/>\nA coberta superior e as paredes retangulares laterais de um circo s\u00e3o revestidas com lona. Parte da estrutura do circo est\u00e1 mostrada na figura com suas medidas correspondentes. O piso n\u00e3o \u00e9 revestido com lona.<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2023\/10\/rob001.png\" style=\"border:none;\" alt=\"\" width=\"300\" height=\"529\" class=\"aligncenter size-full wp-image-202960\" \/><br \/>\nA pir\u00e2mide da parte superior dessa coberta \u00e9 regular e possui [tex]21[\/tex] v\u00e9rtices.<br \/>\n<strong>Calcular a \u00e1rea total da lona utilizada no revestimento da coberta e das paredes.<\/strong>\n<\/div>\n<p style=\"margin:30px\">\n<div class=\"g1n\" style=\"line-height:28px;\">\n<p class=\"tit\" style=\"line-height:28px;margin:10px\">Solu\u00e7\u00e3o<\/p>\n<hr style=\"height:1px; width:100%;background-color:#800000; margin-top: 1px; margin-bottom: 20px;border: 0 none\"\/>\nInicialmente, observe que a pir\u00e2mide da coberta possui [tex]21[\/tex] v\u00e9rtices, sendo um desses o v\u00e9rtice superior da pir\u00e2mide. Ent\u00e3o, a pir\u00e2mide possui [tex]20[\/tex] faces triangulares laterais e, consequentemente, o prisma que comp\u00f5e as paredes possui [tex]20[\/tex] faces retangulares laterais.<br \/>\nDessa forma, a \u00e1rea total da lona, [tex]A_{T}[\/tex], \u00e9 dada pela soma das \u00e1reas dos vinte ret\u00e2ngulos laterais com as \u00e1reas dos vinte tri\u00e2ngulos que ficam na coberta.<br \/>\nObserve que:<\/p>\n<table style=\" width:80%; height:auto; margin-left: auto; margin-right:auto;\">\n<tr>\n<td  class=\"gin\" style=\"border:1px solid #ffffff;text-align:justify;\">\n<span style=\" color:#98622F;\">&#9658;<\/span> Para cada ret\u00e2ngulo temos:<br \/>\n[tex]~~\\\\<br \/>\nA_r=\\text{base}\\times\\text{altura}=5 \\times 6=30\\text{ m}^2.\\\\<br \/>\n~~[\/tex]<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2023\/10\/rob002.png\" style=\"border:none\" alt=\"\" width=\"196\" height=\"272\" class=\"aligncenter size-full wp-image-202961\" \/>\n <\/td>\n<td style=\"width:10%;border:1px solid #ffffff;\"><\/td>\n<td  class=\"gin\" style=\"border:1px solid #ffffff;text-align:justify;\">\n<span style=\" color:#98622F;\">&#9658;<\/span> Para cada tri\u00e2ngulo temos:<br \/>\n[tex]~~\\\\<br \/>\nA_t=\\dfrac{\\text{base}\\times\\text{altura}}{2}=\\dfrac{5 \\times 6}{2}=15\\text{ m}^2.\\\\<br \/>\n~~[\/tex]<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2023\/10\/rob003.png\" style=\"border:none\"  alt=\"\" width=\"147\" height=\"279\" class=\"aligncenter size-full wp-image-202962\" \/>\n <\/td>\n<\/tr>\n<\/table>\n<p>Assim, segue que:<br \/>\n[tex]\\qquad \\qquad A_T=20 \\times A_r+20\\times A_t \\\\<br \/>\n\\qquad \\qquad A_T=20 \\times30+20\\times 15 \\\\<br \/>\n\\qquad \\qquad A_T=600+300 \\\\<br \/>\n\\qquad \\qquad   \\boxed{A_T=900}\\,. [\/tex]<br \/>\nPortanto, foram utilizados  [tex]\\fcolorbox{black}{#EEE2D3}{$A_T=900\\text{ m}^2$}[\/tex] de lona no revestimento da coberta e das paredes do circo.<\/p>\n<hr style=\"height:1px; width:100%;background-color:#800000; margin-top: 10px; margin-bottom: 15px;border: 0 none\"\/>\n<p class=\"g2\" >Solu\u00e7\u00e3o elaborada pelos <strong>Moderadores do Blog<\/strong>.<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"g3\">\nParticiparam da discuss\u00e3o os Clubes: <strong>Os Somados<\/strong> ; <strong>Pent\u00e1gono do Millennium<\/strong> ; <strong> Obm\u00e9picos<\/strong> ; <strong>Fibonacci<\/strong> ; <strong>Super G\u00eanios 3\u00b0CPM <\/strong> ; <strong>CF Gauss <\/strong>.<\/div>\n<p style=\"margin:10px\">\n","protected":false},"excerpt":{"rendered":"<p>&#9999; Link do problema para dispositivos da Apple. Problema (Indicado a partir do 2\u00ba ano do E. M.) A coberta superior e as paredes retangulares laterais de um circo s\u00e3o revestidas com lona. Parte da estrutura do circo est\u00e1 mostrada na figura com suas medidas correspondentes. O piso n\u00e3o \u00e9 revestido com lona. A pir\u00e2mide &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/clubes.obmep.org.br\/blog\/problema-area-total\/\">Continue lendo<\/a><\/p>\n","protected":false},"author":164,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-onecolumn.php","meta":{"footnotes":""},"class_list":["post-202956","page","type-page","status-publish","hentry","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/users\/164"}],"replies":[{"embeddable":true,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/comments?post=202956"}],"version-history":[{"count":7,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202956\/revisions"}],"predecessor-version":[{"id":204583,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202956\/revisions\/204583"}],"wp:attachment":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/media?parent=202956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}