For a simple circular curve which one of the following gives the correct relation between the radius R and degree of curve D, for 20 m arc length ?

For a simple circular curve which one of the following gives the corre

1.	For a simple circular curve which one of the following gives the correct relation between the radius R and degree of curve D, for 20 m arc length ?
A.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/05-83-1.png">
B.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/05-83-2.png">
C.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/05-83-3.png">
D.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/05-83-4.png">
Answer» D. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/05-83-4.png">