Площадь сектора:
S = πR² · α / 360°
114π = πR² · 64° / 360°
114 = R² · 8 / 45
R² = 114 · 45 / 8 = 57 · 45 / 4
R = √(57 · 9 · 5) / 2 = 3√285 / 2
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Площадь сектора:
S = πR² · α / 360°
114π = πR² · 64° / 360°
114 = R² · 8 / 45
R² = 114 · 45 / 8 = 57 · 45 / 4
R = √(57 · 9 · 5) / 2 = 3√285 / 2