Carilah Luas Nya !!!!!!!!!

Carilah luas nya !!!!!!!!!

 

\frac{1}{2} \times \frac{22}{7} \times r \times r \\ = \frac{1}{2} \times \frac{22}{7} \times 21 \times 21 \\ = 11 \times 3 \times 21 \\ = 693 {cm}^{2}


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