as a part of campaign a huge balloon.with massage of awareness of cancer was displayed from the terace of a tall building . it was held by strings of length 8m each and inclined at an angle of 60° at the point where it was tied .
(1) what is the length of AB .
(2) if the perpendiculer distance from the centre of the circle to the chord AB is 3 m then find the radius of the circle.
(3) which method be apply to find the radius of the circle.
(4) what do you think of such campaign