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[tex]\begin{aligned} Keliling &= (9 + 5 + \sqrt{9^2 + 12^2} + \sqrt{5^2 + 12^2}) ~cm \\&= (14 + \sqrt{81 + 144} + \sqrt{25 + 144} )~cm \\&= (14 + \sqrt{225} + \sqrt{169})~cm \\&= (14 + 15 + 13)~cm \\&= (14+ 28)~cm \\&= \boxed{\bold{\underline{42~cm}}} \end{aligned}[/tex]
[tex]\begin{array}{lr}\texttt{Memperingati Hari POM-TNI 2023}\end{array}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 11 - 05 - 2023}}[/tex]
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[tex]\begin{aligned} Keliling &= (9 + 5 + \sqrt{9^2 + 12^2} + \sqrt{5^2 + 12^2}) ~cm \\&= (14 + \sqrt{81 + 144} + \sqrt{25 + 144} )~cm \\&= (14 + \sqrt{225} + \sqrt{169})~cm \\&= (14 + 15 + 13)~cm \\&= (14+ 28)~cm \\&= \boxed{\bold{\underline{42~cm}}} \end{aligned}[/tex]
[tex]\begin{array}{lr}\texttt{Memperingati Hari POM-TNI 2023}\end{array}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 11 - 05 - 2023}}[/tex]