c) If a goat is tied to a pole at Point A with a rope 12 m long such that it can not enter a triangle ABC with AB=AC=10 m and angle A = 30 deg. How much area can it graze?
(i) less than 132 pi (ii) more than 132 pi (iii) equal to 132 pi (iv) none
Ans. (ii)

• more than 132 pi should be the right answer
• 9 years agoHelpfull: Yes(13) No(5)
• pi*12*12(1-30/360) =132pi
  
• 9 years agoHelpfull: Yes(5) No(0)
• Since the length of the rope is longer than the sides of the triangle it will eat a bit more at the edges than (330/360)*144pi. Hence more than 132pi.
  
• 7 years agoHelpfull: Yes(4) No(0)
• less than 132pi
• 9 years agoHelpfull: Yes(3) No(4)
• area of isosceles triangle=1/2 *r^2*sin30=1/2*10*10*1/2=25
  Reqd Area=144pi-25
• 9 years agoHelpfull: Yes(1) No(1)
• can u please explain it?
• 9 years agoHelpfull: Yes(0) No(0)
• please explain it clearly...
• 9 years agoHelpfull: Yes(0) No(0)
• explain in easiest way plz
  
• 9 years agoHelpfull: Yes(0) No(0)
• circle area=pi*r*r
  =3.14*100
  =314
  deducting 30degree angle from it results to less then pi
• 9 years agoHelpfull: Yes(0) No(2)
• https://www.youtube.com/watch?v=pdLMEO14IOc&feature=youtu.be
  
  
  details you get from here...
• 6 years agoHelpfull: Yes(0) No(0)