NCERT Exercise 11.1 - Q12 - Areas Related to Circles

Question: To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle to a distance of 16.5 km. Find the area of the sea over which the ships are warned (Use ).

Answer: The warning area is 189.97 km^2.

Full step-by-step NCERT solution with diagrams on Something by Zero.