NTSE Stage2 (NationalLevel) ScholasticAptitude & Language Comprehension: Questions 1 of 816
» Mathematics » Basic Geometry
MCQ▾
Question
A horse is tied to a post by a rope. If the horse moves along a circular path always keeping the rope tight and describes 88 m when it has traced out 72° at the center, then the length of the rope is
Choices
Choice (4)  Response  

a.  80 m 

b.  72 m 

c.  85 m 

d.  70 m 

Answer
d.
Explanation
Here, as per given data below figure is developed,
So, angle made at center on circular path:
Now, from the formula of circular angle with radius: