Mathematics
Tick the correct answer in the following : Area of sector of angle p (in degrees) of a circle with radius R is 1. (p/180)×2πR 2. (p/180)×πR^2 3. (p/360)×2πR 4. (p/720)×2πR^2
Related Questions
An umbrella has 8 ribs which are equally spaced. Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.
A car has two wipers which do not overlap. Each wiper has a blade of length 25 cm sweeping through an angle of 115°. Find the total area cleaned at each sweep of the blades.
To warn ships for underwater rocks, a lighthouse spreads a red coloured 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)