area of a circle fill in the blank

[tex]\large\huge\green{\sf{Given:-}}[/tex]
[tex]\large\huge\green{\sf{ToFind:-}}[/tex]
[tex]\large\huge\green{\sf{Solution:-}}[/tex]
[tex]area \: of \: circle= πr² \\ = \frac{22}{7} \times (7) {}^{2} \\ = \frac{22}{7} \times 7 \times 7 \\ = 22 \times 7 = 154ft {}^{2} [/tex]