The cost of fencing a circular ground at ₹120/m is ₹3,768. Find the radius of the ground.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 5 m.
Cost per metre = ₹120
Total cost = ₹3768
Circumference = = 31.4 m
Circumference = 2πr
⇒ 2 × × r = 31.4
⇒ r = = 5 m