Perhatikan persegi ABCD berikut!

<img id="Picture_x0020_5" src="data:image/png;base64,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" style="width: 200px; height: 202px;" />&nbsp;

Pada persegi di atas, diketahui panjang sisi AB adalah <img align="middle" alt="begin mathsize 14px style left parenthesis 10 – 2 straight x right parenthesis cm end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mo»(«/mo»«mn»10«/mn»«mo»§#8211;«/mo»«mn»2«/mn»«mi mathvariant=¨normal¨»x«/mi»«mo»)«/mo»«mi»cm«/mi»«/mrow»«/mstyle»«/math»" data-latex="\style{font-size:14px}{(10–2\mathrm x)\mathrm{cm}}" height="14" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -2px;" width="77" />&nbsp;dan panjang sisi BC adalah <img align="middle" alt="begin mathsize 14px style left parenthesis straight x plus 4 right parenthesis cm end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mo»(«/mo»«mi mathvariant=¨normal¨»x«/mi»«mo»+«/mo»«mn»4«/mn»«mo»)«/mo»«mi»cm«/mi»«/mrow»«/mstyle»«/math»" data-latex="\style{font-size:14px}{(\mathrm x+4)\mathrm{cm}}" height="14" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -2px;" width="63" />. Panjang sisi AD adalah ... cm.

Keliling sebuah persegi adalah 52 cm. Luas persegi tersebut adalah ... <img align="middle" alt="begin mathsize 14px style cm squared end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«msup»«mi»cm«/mi»«mn»2«/mn»«/msup»«/mstyle»«/math»" data-latex="\style{font-size:14px}{\mathrm{cm}^2}" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="26" />.&nbsp;

Perhatikan gambar berikut!

<img id="Picture_x0020_7" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAQ8AAAD9CAIAAAAtYGXPAAAAAXNSR0IArs4c6QAAFZpJREFUeF7tnQ9wVEWex0kIMSEJSQgJRBNE/rlaJaBidrXAE5YDZIs9q7w1/LtlueApepaUIjmJq7LHf+VcdMF1hQW3gGTZ49bVAgERXczKbUQMbpUoJrgCEggJGZKQTBLC3Hfo+G5IQvJm3us387q/r6am3rzp7l//Pr/5vl93vyZE+Xy+HjxIgARMEIg2UYZFSIAE/ASoFv4OSMAsAarFLCmWI4Eo5+ctXz/0wtk33iF6EnAFgfTZ997w2lOiq2FQS0nceFdgYidJQBDI8e4TJxyJ8SdBAmYJhDO3ZA68wWw3WY4EHCdQcfxr5hbHqdOgKgQ4ElMlkpL9SFv94IC3Fyc9eK9kOxHdPNUS0eGJqM71ujEr5al/TnlmekT1ysnOUC1O0naxreonX695fjMcSPrphIR/utPFnljoOtViAZ5mVeu3vt/w1v/C6fgpd2jmepu7VIuecQ/R65olW/1qGTeyZ1qfEJtwczWqxc3Rc7zvlzwXvB99DrOYwzhuPPwGqZbwx8BdPWit9KDDPfunuKvbtvSWarEFo0aNtJ4RaknVyOfvXKVaNAy6JZeZWyzhY2WtCLSeqfHnloxuRmKpz868rmTNtftfbAcn++iGdq/kx+9zC0DmFrdEKlL6KUZivYZdd7UO9Z6SA50kzhofnZLYaZnm0mOeJYXGy/sX/7KBKw7uqnRFmCKrk5nvrYjJTq+csaLp4Fcde9bv1cd6Dcls2FHS+0c5UXGxp+5eEFgGicV74MjZ2e1zTmCZzD3LolMSIEux8obyzYfKEmeOg/xaT9d4Vmxr2FniABHuqnQAsvomGncdhJNX2zNWNe+ViomLzq95swsQ14wejj0BMdemXa2MyEvIPy1fnoy786Y+j05t+qSsfvO+6OSE5PlhG7lxJKb+j9t2D2s37L74bRWeUWKfZdw9I4JtH7/+jK352G+W+cGq9DeuyDxGU5c89VUPvVz3u701i7fgIjQDEdb8YktTaXnMoP5dyCzYzgRVnmoJChcL+wlcOld3YfO+Hj4fRkrpv3k8WCgYTVXPf63inoWYwEA5nc7yfd6Wi6eq0XLTwaN4bz1XJ6z4GpqCNWdjearFRpi6NBXdNylh1vgeUVG45Z/9tzVBuX1ieB5mMph4QAxnHliKHBI/4dagWghjYaoljPDdarpP3qSY6/o1vn/49NTnvB98Zt4NLJdhuhJYHltpMBUx30J4S1It4eXvSuvxk0ej33WvB/2He+LHjcB0xRh6YfqBPQEYmLmFAtXilkhFSj9jRw7G8vHFv5/pdPm4016mvTAXi8LIKudf+qOvsRkLXHh2Cc1kFD3tV92mdyPFt+76QbV0R4jfX0lA7Kds+epb82CiM1KwkBV7yyDMVc7mvYTJfcL9Y6AZn7f5/Ortzjw8Md/bLkry6aQtGDVqJPFffpj68xn1W/aJtV0zB7JK8pP3QydigcstB59OuiVSkdtPsUNM7H8xeSTNnXxhe7G7pNKpaxyJmYw4i7URECOxoNSCJWM8WFSAINWiQBAddaEtt1S6ZiHLRjpUi40w1W8Kmx3j7roZfrZ8cVJ9bzt4SLVoGPTQXU59ZgYq47lka3Vt6K24tibV4trQOd7xxBnjev/4B3617PzYceMRYZBqiYgwRH4n8JddU5+fhX5iX/CFPx2I/A7L6CHVIoOqmm1iD6Xnhf/GvzlR0z0TXvHppAlILKIlAT6d1DLsdNomAurnluKf1H412msTLjYTEQSGHYwb8wfpf1pWx9xCqUTED9zWToQrppzl2xpGNqY0AfVHYhtXVooIfvNNhdKh1MK566/PFH7Oyc+Q7bCOIzHZTNm+PgQ4EtMn1vTUKgGqxSpB1teHANWiT6zpqVUCVItVgqyvDwGqRZ9Y01OrBKgWqwRZXx8CVIs+saanVglQLVYJsr4+BKgWfWJNT60SoFqsEmR9fQhQLfrEmp5aJUC1WCXI+voQoFr0iTU9tUqAarFKkPX1IUC16BNremqVANVilSDr60OAatEn1vTUKgGqxSpB1teHANWiT6zpqVUCVItVgqyvDwGqRZ9Y01OrBKgWqwRZXx8CVIs+saanVglQLVYJsr4+BKgWfWJNT60SoFqsEmR9fQhQLfrEmp5aJUC1WCXI+voQoFr0iTU9tUqAarFKkPX1IUC16BNremqVANVilSDr60OAatEn1vTUKgGqxSpB1teHANWiT6zpqVUCVItVgqyvDwGqRZ9Y01OrBKgWqwRZXx8CVIs+saanVglQLVYJsr4+BKgWfWJNT60SoFqsEmR9fQhQLfrEmp5aJUC1WCXI+voQoFr0iTU9tUqAarFKkPX1IUC16BNremqVANVilSDr60OAatEn1vTUKgGqxSpB1teHANWiT6zpqVUCVItVgqyvDwGqRZ9Y01OrBKgWqwRZXx8CVIs+saanVglQLVYJsr4+BKgWfWJNT60SoFqsEmR9fQhQLfrEmp5aJUC1WCXI+voQoFr0iTU9tUqAarFKkPX1IUC16BNremqVANVilSDr60OAaglzrJf97H82zD9ovF799+LHfvxfaX0yw9gtdGbB/evC2IGINU21hD80NfWVhR+8KF6fHy8ZNfjuh+9dFv5usQcdCET5fD6HsZTEjRcWMwfe4IDpjSsrhZVvvqlwwFywJpBbYmPiFqyfYlQsyN04OPOWvF+ORpKBchb+dmp1rb/ngR9RKyEu2VNfmdVvGL46cqKk7NRn40b+JDEuGdrbtv+XJUf34DqyxBnPcZz0TxnYfNELKb7y1hPCEL5CrRe3PxL4sbR8//R7Fhg9CSwQrF+Syl9/fVvWnZOfIcmE0WzF8a/FeY53nzhhbpHNPOj2axtrUKfbwRiEgWJIRyervropO2fq9+eWnTq87/C2hLg+9931sGEVOjlXdxrFKj0noL2uh1ifHvszSqLusYq/4WT/394MuvdKV2ivlurq6lWrVvXt27egoEA43vGK0kDC7NyEUdNuHpiDhCDySRdHvff8y289sbe0aMv7q1AMmkHewHl5xWdQiCE2XEcCQbHnNk8XuuqiTRhFSRRoutiIE5GgeBgErlBLUVHRsGHD8vPza2r8tzccHa+Qne0EUhMzjFk+BkIXvLVvfvTrbq20XGwSijr67ad4r7uckfw/9BZvYF3jOi5+Wv5nvEOQ3TbOAp0SuEItmzZtmjZtWmlpqVG045XAVoqLi6OiolBl6NChOME7rjzyyCM4x4EcRehmCIhZ/oEvdqIwhkCYw0i6qdc3emAiMT7FTK9YpiOBK9Sya9eudevWjRw50ijX8UrHJvbs2bNkyZLCwsJz586NHTv2448/3rFjR25uLnIUxEPoZghg2LN+17MYKWF+L+/eL3QiNMMjBAI2zPKXL1+O9CIO9GD9+vVTpkxZu3Ytzt95550Q+qRtFcxDsHI19QcPBhIYMuAW8bFfSA9hkuJTjdZuHfIPaB9TeXHF+Cpn+ERtmQfluA1qyc7OFiYHDRqE96ysLLynpaUF1Q8WBgHMQ7YX/wqLXWLl6q9f7ML7zPH5yDa4IhaLgz1QC3XRwuJZhTjHGoCY7SCP4SNWpe+782GYCGwW6wfZ6TeiirwsF6wXEVLeBrVEiCdqdANDMjzlwMoVfqmYvWBFGH5h6t83aQB+3yH4iFqoixZSEjNKj+3f+O5/ikaQx/AV1pQn3T4LS8+BLZd8uVsYHTTg5hAsKlyl86eTmKMvWrRo6dKlhucdr+ArTEswUcEsBUMvfMS0HnOVqqoqkVg6rYLrfDrp2O+p3SNIx+zKM8Snk/LYsmUSsJMAR2J20mRbahOgWlSOLzabGTvBVPbTKd+4q9Ip0rRjBwHOW+ygyDZIQD4BjsTkM6YFVQhQLapEkn7IJ0C1yGdMC6oQoFpUiST9kE+AapHPmBZUIUC1qBJJ+iGfANUinzEtqEKAalElkvRDPgGqRT5jWlCFANWiSiTph3wCVIt8xrSgCgGqRZVI0g/5BKgW+YxpQRUCVIsqkaQf8glQLfIZ04IqBKgWVSJJP+QToFrkM6YFVQhQLapEkn7IJ0C1yGdMC6oQoFpUiST9kE+AapHPmBZUIUC1qBJJ+iGfANUinzEtqEKAalElkvRDPgGqRT5jWlCFANWiSiTph3wCVIt8xrSgCgGqRZVI0g/5BKgW+YxpQRUCVIsqkaQf8glQLfIZ04IqBKgWVSJJP+QToFrkM6YFVQhQLapEkn7IJ0C1yGdMC6oQoFpUiST9kE+AapHPmBZUIUC1qBJJ+iGfANUinzEtqEKAalElkvRDPgGqRT5jWlCFANWiSiTph3wCVIt8xrSgCgGqRZVI0g/5BKgW+YxpQRUCVIsqkaQf8glQLfIZ04IqBKgWVSJJP+QToFrkM6YFVQhQLapEkn7IJ0C1yGdMC6oQoFpUiST9kE+AapHPmBZUIUC1qBJJ+iGfANUinzEtqEKAalElkvRDPgGqRT5jWlCFANWiSiTph3wCVIt8xrSgCgGqRZVI0g/5BKgW+YxpQRUCVIsqkaQf8glQLfIZ04IqBKgWVSJJP+QToFrkM6YFVQhQLapEkn7IJ0C1yGdMC6oQoFpUiST9kE8gyufzybdyhYWSuPHic+bAGxwwvXFlpQNWaMJhAnPyM2RbrDj+tTCR490nTphbZDNn++oQUF8tww7GqRMuenKZQLhiqv5IjD8wEgiNAEdioXFjrR5pqx8c8NbzSXMm6sxC/ZGYztG11/de38tOeTo3Jf8Be5t1UWtUi4uCFc6uVj/5umdpIXqQlDcpftLt4exK+GxTLeFj7zbLdW/sbdxzCL3u/aMct/Xdnv5SLfZw1KSVmiVb/Wr5x9ui4mM1cTnQTapFw6CH7nLr6Zqmki979IyOHTE49FZcW5NqcW3owtTx1rPnYblnRnKY7IfTLNUSTvputN1a6bmslhQ3dt5in6kWiwC1q061aBdyOhwyAZNqSX125nUla67d/2I7Q9lHN7R7JT9+X8idcbgic4vDwF1vrrXy8rwl/arzlt5TcqCTxFnjo1MSO/W2ufSYZ0mh8fL+5XO3QHHBPrHMPctiBvU3gGJZpm79rrrf7XULYsX6ibXjrENrsSx26u4FiEVH7/q9+livIZkNO0rwWCYqLhbFAssgsXgPHDk7u33OCSyDiEenJLSe8fS6MQvXUb75UFnizHGQHyx6Vmxr2FniAFW37hPzM7p8N6pd+zYwpTwzHTcwB3jRREcCvsbmhnf9zyhTfj6jUz5V816pmLjo/Jo3u6B3zejhST+dEHNt2tXKiLyEiLd8eTLuzpv6PDq16ZOy+s37opMTkueHbeTmmpEYkgleiEHltOXgmJB7N95xG8O9yoAe+BH3J4wH+m8ryDr8Ksr4E9R3scFJ4HWMrY3hNUSIczGwRmtUS6cEkDdwHc8ok2ZPCAERfv0ZW/Nxy8v8YFX6G1dkHqO1S576qodeRsRrFm/BRWgGIqz5xZam0nIMNLqQWQj9MV/FNWpp55KvoalbJ3F/6jkgte63uxv+dACI0zc9KargJHbUYO9Hn+PW5WtqQRlxHTHou3yOuKVhbB3/w1FpL8zt1oqGBRp3f1K3Ybc/vRRMx97kYAlgpFA9/7WKexYCMpTT6Szf5225eKoaLTcdPIr31nN1woqZuAfbH/Pl3aGWqLheSNx4gWxG0dMYDIhodX2gWPUTv0E6qn5qPQIj7knIHjhpfK8U9yrcuk5PfQ63MdFO/IRbW8+0TYrOPLAU12NH6vjEujuubb9bc8XalzoxPA8zGUw8IAYBGdhDa8r5Wu5QC7IEEjdeGL8iFSAvi1tO18el8xeMYq3VtW2SGDcCJ4Fiu+S5IL6CeDDgNtYPcB2T1O6M6Pg99iAn5U2G59iVjL3J5hHgVoVbXmB5QMZUxHwL4S3pDrUgd+OeJF4YJmGp5Grj3W5pRiXGo0zr5Szf8UCzYp6DOU/P/m0jtG7b1K2AWGLBfmTsSg7K9/hxI3DLM4ZeSPWA3OnCWlDNOlbYHWoJxIF7P6Yc14waEhojX30jKvbsbDUG03o0i3kONFn7K//iG4+OBLCC3Hvibbgu9iObOTD9wyoLssr5l/6I4TEGCHh2KQbVqF636V0zjURCGfepxf9bT+uDd2NhJPY75cRk9euWaeP7n6EM/kmTURJL++IcTwkweBNLn9Ak5jDdtqZhAf/u457R2IlsPidEZ6Rgrhh7yyDMVc7mvYQ5ZML9Y6AZn7f5/Ortzjw8sSVS7lCLMcvH/QkZACtamLoAfcPbfwWF1Odn4joGUeJhVteHf3759zNY70J51Brw9mLjkXNLeQUmRWgf13E7DHwk2l2rGn0vdh+LJ/pdH5gEikeT3vdKkVLqf78f55hJYnJ/cuQ8JPDAWWJgU0ZFcREljaeZWJvBR7Fc5vzhDrUYs3yMeq+5fShWtKrn/xqw8NPHEyuc4HpMZl9IyAzBsz9bLdYuUcsf+O8eSCMSeGwcd9fNfivf/56xVmamTX3KiN3HYreYySNp7uQL24vNLMyYbDBcxVyw88VeNP6nyHmTsCZmBA8TemyywFKyvYZUbS3lP3KT/nWiZ+U2M4v4robg1p0vNkLHahiyR791j2KWaYzEGvd+aqMJtZsKIbcoA8QdIzEbcWPIe+7pjUgmmGVixIXFfozlut7UZKN1BZoyP29RwNl2Lmg3ElMvhE56hFUQ/5661ksnb3sUE3cnTTtviyMx55krZVHsO27Yc0h5qXQaNu1GYkr9eJ11BjuOse/YrxZH/nmJs86Zska1mMLEQthrjB3H4FC3YRf2IOsJhGrRM+6heN3yxQnPit97Vv4hlMpK1OEsX4kw0gkJBDjLlwCVTWpDIJy5RRvIdNTdBPj/Tro7fux9WAiEYZafPvvesLhKoyQQAoHAn2sYRmIh9JhVSCASCIQht0SC2+wDCYRAgGoJARqraEqAatE08HQ7BAJUSwjQwlCluLh48uTJUVFR1dVt/8i2qKho6NChd9xxRxh6o6tJqiXSIw95QCdjx47dvbvtDw4ePnwYOpk+fXp5eXmk916t/lEtkR7PI0eOlJWVFRYWLlq0SPQVsoFaduzYMWnS///lmkA3oC4UmDZtGnIRjoKCgp07d+IKzpGLILZI9zli++fj4RICK1euxK+oqqrK6C/UMnr06I7dFyrKzc398MMP8S5+e6gOyaWmpuJbl3gccd1kbonY+5iljg0ZMmTt2rVjxoxZtmyZUM7ChQuRbebNm4fUZEx+LNnQrzLVombMkUPS0vz/O8rgwf4/fA7xCD+Tk3X8v4jtijHVYhdJtqM+AapF/RjTQ7sIUC12kWQ76hOgWtSPMT20iwDVYhdJtqM+Ae7YVz/G9NAuAswtdpFkO+oToFrUjzE9tIsA1WIXSbajPgGqRf0Y00O7CPwfMpGpv0A4XeIAAAAASUVORK5CYII=" style="width: 280px; height: 261px;" />&nbsp; &nbsp;

Suatu taman berbentuk persegi dengan panjang sisi 11 m. Di sekeliling dalam taman tersebut ditanam bunga dengan lebar 1,5 m dan sisanya ditanami rumput. Luas taman yang ditanami bunga adalah ... <img align="middle" alt="begin mathsize 14px style straight m squared end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«msup»«mi mathvariant=¨normal¨»m«/mi»«mn»2«/mn»«/msup»«/mstyle»«/math»" data-latex="\style{font-size:14px}{\mathrm m^2}" height="15" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAPCAYAAAAGRPQsAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAOJ5y/mQAAAH1JREFUeNpjYCAfZAHxJyB+DMQ+DBSCLiBmA2JbIH7KQCXAAsQ/qGVYDhD3UcMgRyDeBHUdRUANiLdAw41isB9qIAb4D8QaUAXfgPgKNOrjgfgSNIBBSSAITQ8yRpGYD8TmUL4pVGwDVIwJiI2B+DUxTv5PgdioYVQwjCoAACQyKGUTRzKyAAAAlnRFWHRNYXRoTUwAPG1hdGggeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzE5OTgvTWF0aC9NYXRoTUwiPjxtc3R5bGUgbWF0aHNpemU9IjE0cHgiPjxtc3VwPjxtaSBtYXRodmFyaWFudD0ibm9ybWFsIj5tPC9taT48bW4+MjwvbW4+PC9tc3VwPjwvbXN0eWxlPjwvbWF0aD4jXpsgAAAAAElFTkSuQmCC" style="max-width: none; vertical-align: -1px;" width="19" />.&nbsp;

Sebuah lahan berbentuk persegi dengan keliling 1,4 km. Luas lahan tersebut adalah ... hektar.