The area of the shaded region can be gotten by multiplying the area of the circle by the subtended angle of the sector.
The area of the shaded region is 1265.42 meters squared, since I subtracted the two totals of both the unshaded region and the shaded region of a circle.
You divide the area of the shaded region by the area of the full circle. For example, if the radius of the shaded region is 2 meters, the probability would be 4pi / 36pi, or 1/9. If the shaded region is a 'slice' of the circle, the chance is just the fraction of the circle which the 'slice' is.
It is difficult to say since there is no image and it is not clear what part is shaded. But, if there is a circle with a 12 metre diameter which contains two equal circles which are as large as possible, then the shaded area is probably 56.55 square metres.
shaded sectors do not appear on listings
Area of a circle with radius r = pir2Area of the largest circle = Area of the smallest circle + Area of the shaded regionSince areas of the smallest circle and the shaded region are 9pi and 72pi, the Area, A, of the largest circle isA = 9pi + 72pi = 81pi, where r2 = 81.Thus, the radius of the largest circle is 9
(pi * radius squared) * ( sector angle / 360 )
j
If 5.7 of a region is shaded, then 94.3% of the region is not shaded. This can be calculated by subtracting the shaded percentage from 100%.
2/3 is not shaded.
If one fifth of a region is not shaded then 4 fifths of the region is shaded. Fifths means there are five parts.
2/3 is not shaded; 2/3 is about 66.667%.