The ratio of the circumferences of two circular flower beds is 4:5. If the smaller flower bed has a radius of 12 m, what is the radius of the larger flower bed?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 15 m.
Circumference of a circle = 2πr
Circumference ∝ Radius
Let the radius of the larger flower bed = r
So, 12/r = 4/5
⇒ 4r = 60
⇒ r = 60/4 = 15 m