Give me the best solution of the ncert class 10 question of chapter areas related to circles . Find the solution of exercise 12.2 question no. 12 and also give me the simplest solution of this question.To warn ships for underwater rocks, a lighthouse spreads a red colored light over a sector of angle 80° to a distance of 16.5 km. Find the area of the sea over which the ships are warned. (Use π = 3.14).