To calculate the sector area, first find what fraction of the whole circle we have. Calculate the area of this sector which has a 60° angle to one decimal place. 60° is one sixth of a full turn ...

60° is one sixth of a full turn (360°). The sector is \(\frac{1}{6}\) of the full area. Remember the area of a circle = \(\pi r^2\) The sector area is: \(\frac{1}{6} \times \pi \times 4^2 = 8.4 ...

We can set the quantities of the central angle out of the total 360 degrees and the sector of the circle out of the total area (πr 2) as equal — in other words, comparing part of a whole to ...