Boki prostokata: x, y
Przekatna: d
[tex]d=20\\\alpha = 24\\sin\alpha=\frac{x}d\\sin(24)=\frac{x}{20}\\0,4067 = \frac{x}{20} /*20\\8,134 = x\\cos\alpha=\frac{y}{d}\\cos(24)=\frac{y}{20}\\0,9135 = \frac{y}{20} /*20\\18.27=y[/tex]
[tex]P=xy\\P=8.134*18.27=148.60818 = 148,61cm^2\\Ob=2x+2y=2*8.134+2*18.27=16.268+36.54=52.808 = 52.81cm[/tex]
