tentukan keliling sebuah persegi yg memiliki sisi (1/√3+1) cm.
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[tex]keliling=4\times\ sisi \\ keliling=4\times \frac{1}{ \sqrt{3}+1 } \\ ~~~~~~~~~~~=\frac{4}{ \sqrt{3}+1 } \times \frac{ \sqrt{3}-1 }{\sqrt{3}-1} \\ ~~~~~~~~~~~= \frac{4(\sqrt{3}-1)}{3-1} \\ ~~~~~~~~~~~= \frac{4(\sqrt{3}-1)}{2} \\ ~~~~~~~~~~~=2( \sqrt{3}-1 ) \\ ~~~~~~~~~~~=2 \sqrt{3}-2 [/tex]
semoga membantu ya :)
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semoga membantu ya :)
[answer.2.content]
