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[tex]Luas = ( \frac{1}{2} \times \pi \times R {}^{2} ) - (\pi \times r {}^{2} )[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 3.14 \times 6 {}^{2} ) - (3.14 \times 3 {}^{2} )[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 3.14 \times 36) - (3.14 \times 9)[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 113.04) - 28.26[/tex]
[tex]~~~~~~~~~~=56.52 - 28.26[/tex]
[tex]~~~~~~~~~~=28.26 \: cm {}^{2} [/tex]
[tex]\begin{array}{lr}\texttt{Rate 1.0 Jika Kalian Iri dengan}\\\\ \texttt{Yang Mulia Maharaja Danial Alf'at}\end{array}[/tex] ☝️
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}\boxed{\colorbox{ccddff}{15/03/23}}[/tex]
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[tex]Luas = ( \frac{1}{2} \times \pi \times R {}^{2} ) - (\pi \times r {}^{2} )[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 3.14 \times 6 {}^{2} ) - (3.14 \times 3 {}^{2} )[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 3.14 \times 36) - (3.14 \times 9)[/tex]
[tex]~~~~~~~~~~=( \frac{1}{2} \times 113.04) - 28.26[/tex]
[tex]~~~~~~~~~~=56.52 - 28.26[/tex]
[tex]~~~~~~~~~~=28.26 \: cm {}^{2} [/tex]
..
[tex]\begin{array}{lr}\texttt{Rate 1.0 Jika Kalian Iri dengan}\\\\ \texttt{Yang Mulia Maharaja Danial Alf'at}\end{array}[/tex] ☝️
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}\boxed{\colorbox{ccddff}{15/03/23}}[/tex]