Quantitative Aptitude Ques 2461
Question: .
A horse takes $ 2\frac{1}{2},s $ to complete a round around a circular field. If the speed of the horse was 66 m/s, then the radius of the field is, $ [ take,\pi =\frac{22}{7} ] $
Options:
A) 25.62 m
B) 26.52 m
C) 25.26 m
D) 26.25 m
Show Answer
Answer:
Correct Answer: D
Solution:
- Circumference of circular field $ =66\times \frac{5}{2}=33\times 5=165,m $ We know that, circumference $ =2\pi r $
$ \Rightarrow $ $ 165=2\times \frac{22}{7}\times r $ [where, r is the radius of field]
$ \Rightarrow $ $ r=\frac{165\times 7}{2\times 22}=\frac{105}{4} $
$ \Rightarrow $ $ r=26.25m $
BETA
