A fence encloses a square field whose sides measure 10m. A horse is tethered on a rope that is attached to a corner post of the field so that the horse is outside the fence.If the rope holding the horse is 20m long, find the total grazing area of the horse in square metres.
don't rly wanna explain why im doing what im doing cus the diagram I made to solve this is kinda weird
20^2 * pi = 400pi
3/4 (400pi) = 300pi
10^2 * pi = 100pi
100pi/2 = 50pi
300pi + 50pi = 350pi
answer is 350pi