[tex]r = \frac{d}{2} = \frac{22 \: m}{2} = 11 \: m \\ \\ Luas \: lingkaran \\ \pi \times r \times r \\ 3,14 \times 11 \: m \times 11 \: m \\ 379,94 \: {m}^{2} [/tex]
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[tex]r = \frac{d}{2} = \frac{22 \: m}{2} = 11 \: m \\ \\ Luas \: lingkaran \\ \pi \times r \times r \\ 3,14 \times 11 \: m \times 11 \: m \\ 379,94 \: {m}^{2} [/tex]