luas lingkaran 2426cm. berapa cm panjang jari jari lingkaran tersebut? tolong kasih jalan

[tex]\pi \times {r}^{2} = 2426 \\ {r}^{2} = \frac{2426}{\pi} \\ r = \sqrt{ \frac{2426}{\pi} } \\ r = \sqrt{772.219784} \\ r =27.7888428 \\ [/tex]
r=jari2 lingkaran