Keliling lingkaran yg luasnya 154 m² adalah....M Jawab pake cara please

[tex]luas \\ 154 = \pi \times r {}^{2} \\ 154 = \frac{22}{7} \times r {}^{2} \\ r {}^{2} = 154 \times \frac{7}{22} \\ r {}^{2} = 49 \\ r = \sqrt{49} \\ r = 7[/tex]
[tex]keliling \\ 2 \times \pi \times r \\ 2 \times \frac{22}{7} \times 7 \\ = 44 \: cm [/tex]

karena 22/7 × 14 × 14 =154