Now we have an equilateral triangle. Three sides of equal length andall the angles are 60 degrees. This is a scalene triangle. All the sides are different lengths and each angle is different as well.

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frac{\text{angle}}{360} \times \pi r^2 \) Calculate the area of this sector which has a 60° angle to one decimal place. 60° is one sixth of a full turn (360°). The sector is \(\frac{1}{ ...