Question

Ab is a chord of circle of radius 10cm.the chords subtends a right angle at the centre find the area of the minor segments .take ฯ=3.14

Answer 1

Area of the sector of angle =∅/360  ×  лr²                                                                           ⇒90/360  × 22/7  ×  10  ×  10      
                                               ⇒78.5cmArea of ΔOAB = 1/2  ×  10  ×  10               [1/2 ×  base  ×  hight]                           ⇒50cmarea of minor segment  =area of the sector of angle -  area of ΔOAB
                                     ⇒78.5  -  50       
                                     ⇒28.5