Luas tembereng
[tex] \frac{57}{200} \times r \times r \\ \\ \frac{57}{200} \times 10 \times 10 \\ \\ 28,5 \: {cm}^{2} \: (a)[/tex]
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Luas tembereng
[tex] \frac{57}{200} \times r \times r \\ \\ \frac{57}{200} \times 10 \times 10 \\ \\ 28,5 \: {cm}^{2} \: (a)[/tex]