You use proportions
Chat with our AI personalities
The area of the shaded region can be gotten by multiplying the area of the circle by the subtended angle of the sector.
Well, darling, if you shaded all but three eighths of the rectangle, then the shaded area is 5/8 of the total rectangle. To find the percentage of the rectangle that is not shaded, you subtract the shaded area from 100%. So, 100% - 62.5% (5/8 as a percentage) = 37.5%. Voilà, 37.5% of the rectangle is not shaded.
it is actually very easy what you do is find the area of both shapes then if your problem is like find the chances of hitting the shaded area you do area of shaded divided by the total area of the whole object then multiply that by 100
There is no shaded space (indeed, no triangle) so the answer must be 0.
75% shaded; 25% unshaded