{"id":202145,"date":"2023-10-06T00:49:59","date_gmt":"2023-10-06T03:49:59","guid":{"rendered":"http:\/\/clubes.obmep.org.br\/blog\/?page_id=202145"},"modified":"2023-10-06T00:49:59","modified_gmt":"2023-10-06T03:49:59","slug":"a-problema-loteamento","status":"publish","type":"page","link":"https:\/\/clubes.obmep.org.br\/blog\/a-problema-loteamento\/","title":{"rendered":"(A) Problema: Loteamento"},"content":{"rendered":"<p class=\"ti3\"  style=\"text-align:center;\">Clique no bot\u00e3o abaixo para visualizar o problema.<\/p>\n<div style=\"text-align:center;margin-top:10px;\">\n<input class=\"bo1 c1 cb13\" style=\"width:150px;\" value=\"Problema\" title=\"Clique aqui\" type=\"button\" onclick=    \"if(this.parentNode.getElementsByTagName('div')[0].style.display != ''){this.parentNode.getElementsByTagName('div')[0].style.display = '';this.value = 'Ocultar';} else{this.parentNode.getElementsByTagName('div')[0].style.display = 'none'; this.value = 'Problema';}\" \/>  <\/p>\n<div style=\"display: none;\">\n<p style=\"margin:10px\">\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 9\u00ba ano do E. F.)<\/span><\/p>\n<hr style=\"height:1px; width:100%;background-color:#800000; margin-top: 10px; margin-bottom: 20px;border: 0 none\"\/>\nEm um grande loteamento h\u00e1 tr\u00eas terrenos retangulares vizinhos de dimens\u00f5es [tex]a[\/tex] por [tex]b[\/tex], [tex]b[\/tex] por [tex]c[\/tex] e [tex]a[\/tex] por [tex]c[\/tex], sendo [tex]a[\/tex], [tex]b[\/tex] e [tex]c[\/tex] medidas em metros. Esses terrenos possuem \u00e1reas de [tex]96\\text{ m}^2[\/tex], [tex]48\\text{ m}^2[\/tex] e [tex]72\\text{ m}^2[\/tex], respectivamente.<br \/>\nNo mesmo loteamento, h\u00e1 outros tr\u00eas terrenos quadrados vizinhos de lados [tex]a[\/tex], [tex]b[\/tex] e [tex]c[\/tex].<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2021\/08\/Loteamento.png\" style=\"border:none;\"alt=\"\" width=\"461\" height=\"138\" class=\"aligncenter size-full wp-image-176706\" srcset=\"https:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2021\/08\/Loteamento.png 461w, https:\/\/clubes.obmep.org.br\/blog\/wp-content\/uploads\/2021\/08\/Loteamento-300x90.png 300w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><br \/>\n Qual a \u00e1rea total dos tr\u00eas terrenos quadrados?<\/p>\n<\/div>\n<p style=\"margin:40px\">\n<div class=\"g1n\" style=\"line-height:28px;\">\n<p class=\"tit\" style=\"line-height:28px;margin:10px\">Solu\u00e7\u00e3o 1<\/p>\n<hr style=\"height:1px; width:100%;background-color:#800000; margin-top: 1px; margin-bottom: 20px;border: 0 none\"\/>\nA partir das informa\u00e7\u00f5es dadas no texto, temos que:<br \/>\n[tex]\\qquad a \\cdot b=96;\t\\qquad \\textcolor{#800000}{(i)}[\/tex]<br \/>\n[tex]\\qquad b \\cdot c=48;\t\\qquad\\textcolor{#800000}{(ii)}[\/tex]<br \/>\n[tex]\\qquad a \\cdot c=72.\t\\qquad\\textcolor{#800000}{(iii)}[\/tex]<\/p>\n<p>Multiplicando as tr\u00eas equa\u00e7\u00f5es, obtemos:<br \/>\n[tex]\\qquad a^2 \\cdot b^2 \\cdot c^2=96 \\cdot 48 \\cdot 72\\\\<br \/>\n\\qquad a \\cdot b \\cdot c=\\sqrt{331\\ 776^{~}}\\\\<br \/>\n\\qquad a \\cdot b \\cdot c=576.      \\qquad\\textcolor{#800000}{(iv)}[\/tex]<\/p>\n<p>Dividindo [tex]\\textcolor{#800000}{(iv)}[\/tex] por [tex]\\textcolor{#800000}{(i)}[\/tex], obtemos:<br \/>\n[tex]\\qquad \\dfrac{a \\cdot b \\cdot c}{a \\cdot b}=\\dfrac{576}{96}=6[\/tex],<br \/>\nou seja, [tex]\\boxed{c=6 \\text{ m}}.[\/tex]<\/p>\n<p>Dividindo [tex]\\textcolor{#800000}{(iv)}[\/tex] por [tex]\\textcolor{#800000}{(ii)}[\/tex], obtemos:<br \/>\n[tex]\\qquad \\dfrac{a \\cdot b \\cdot c}{b \\cdot c}=\\dfrac{576}{48}=12[\/tex],<br \/>\nou seja, [tex]\\boxed{a=12 \\text{ m}}.[\/tex]<\/p>\n<p>Dividindo [tex]\\textcolor{#800000}{(iv)}[\/tex] por [tex]\\textcolor{#800000}{(iii)}[\/tex], obtemos:<br \/>\n[tex]\\qquad \\dfrac{a \\cdot b \\cdot c}{a \\cdot c}=\\dfrac{576}{72}=8[\/tex],<br \/>\nou seja, [tex]\\boxed{b=8 \\text{ m}}.[\/tex]<\/p>\n<p>Finalmente, a \u00e1rea total dos tr\u00eas terrenos quadrados \u00e9<br \/>\n[tex]\\qquad a^2+b^2+c^2=12^2+8^2+6^2= \\fcolorbox{black}{#CAF3BA}{$244\\text{m}^2$}\\,.[\/tex]<\/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=\"g1n\" style=\"line-height: 28px;\">\n<p class=\"tit\" style=\"line-height: 28px; margin: 10px;\">Solu\u00e7\u00e3o 2<\/p>\n<hr style=\"height: 1px; width: 100%; background-color: #800000; margin-top: 1px; margin-bottom: 20px; border: 0 none;\" \/>\nA partir das informa\u00e7\u00f5es dadas, temos que [tex]~ab=96~[\/tex], [tex]~bc=48~[\/tex] e [tex]~ac=72~.[\/tex]<br \/>\nIsolando [tex]a[\/tex] na primeira e na terceira igualdades, segue que:<br \/>\n[tex]\\qquad a=\\dfrac{96}{b}~[\/tex] e [tex]~a=\\dfrac{72}{c}.[\/tex]<br \/>\nIgualando os valores de [tex]a[\/tex], temos que:<br \/>\n[tex]\\qquad \\dfrac{96}{b}=\\dfrac{72}{c}\\\\<br \/>\n\\qquad  c=\\dfrac{72b}{96}=\\dfrac{3b}{4}.[\/tex]<br \/>\nIsolando [tex]c[\/tex] em [tex]bc=48[\/tex], obtemos [tex]c=\\dfrac{48}{b}.[\/tex]<br \/>\nIgualando os valores encontrados de [tex]c[\/tex] e observando que [tex]b \\gt 0[\/tex], temos que:<br \/>\n[tex]\\qquad \\dfrac{3b}{4}=\\dfrac{48}{b}\\\\<br \/>\n\\qquad 3b^2=192 \\\\<br \/>\n\\qquad b=8.[\/tex]<br \/>\nDescoberto o valor de [tex]b[\/tex], podemos encontrar os outros dois valores:<\/p>\n<table class=\"bf\" style=\"margin-left:60px;  width: 20%;\">\n<tr  class=\"bf\">\n<td class=\"bf\" style=\"border-right:2px solid #800000\">\n[tex]ab=96 \\\\<br \/>\n 8a=96 \\\\<br \/>\n a=12.[\/tex]\n<\/td>\n<td class=\"bf\">\n[tex]\\quad bc=48 \\\\<br \/>\n\\quad 8 c=48 \\\\<br \/>\n\\quad c=6.[\/tex]<\/td>\n<\/tr>\n<\/table>\n<p>Assim, se [tex]A[\/tex] \u00e9 a \u00e1rea total dos terrenos quadrados, segue que:<br \/>\n[tex]\\qquad A=a^2+b^2+c^2\\\\<br \/>\n\\qquad A=12^2+8^2+6^2\\\\<br \/>\n\\qquad A=144+64+36\\\\<br \/>\n\\qquad  \\fcolorbox{black}{#CAF3BA}{$A=244\\text{ m}^2$}\\,.[\/tex]<\/p>\n<hr style=\"height: 1px; width: 100%; background-color: #800000; margin-top: 10px; margin-bottom: 15px; border: 0 none;\" \/>\n<p class=\"g2\" style=\"line-height:20px;\">Solu\u00e7\u00e3o elaborada pelo <strong>COM Uni\u00e3o Fibonacci<\/strong>.<\/p>\n<\/div>\n<p style=\"margin:30px\">\n<div class=\"g3\">\nParticiparam da discuss\u00e3o os Clubes: <strong>Os Somados<\/strong> e <strong>Uni\u00e3o Fibonacci<\/strong>.<\/div>\n<p style=\"margin:10px\">\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Clique no bot\u00e3o abaixo para visualizar o problema. Problema (Indicado a partir do 9\u00ba ano do E. F.) Em um grande loteamento h\u00e1 tr\u00eas terrenos retangulares vizinhos de dimens\u00f5es [tex]a[\/tex] por [tex]b[\/tex], [tex]b[\/tex] por [tex]c[\/tex] e [tex]a[\/tex] por [tex]c[\/tex], sendo [tex]a[\/tex], [tex]b[\/tex] e [tex]c[\/tex] medidas em metros. Esses terrenos possuem \u00e1reas de [tex]96\\text{ m}^2[\/tex], [tex]48\\text{ &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/clubes.obmep.org.br\/blog\/a-problema-loteamento\/\">Continue lendo<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-onecolumn.php","meta":{"footnotes":""},"class_list":["post-202145","page","type-page","status-publish","hentry","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202145","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/comments?post=202145"}],"version-history":[{"count":1,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202145\/revisions"}],"predecessor-version":[{"id":202146,"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/pages\/202145\/revisions\/202146"}],"wp:attachment":[{"href":"https:\/\/clubes.obmep.org.br\/blog\/wp-json\/wp\/v2\/media?parent=202145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}