Question

radius of a circle is r cm. if the radius becomes thrice, how will the circumference of the circle change?
a) Option I
b) Option 2
c) Option 3
d) Option4​

Answer 1

Answer:

opt 1

Step-by-step explanation:

the increased radius 3r

so new circumference = 2π3r = 3(2πr)

so the new c is 3 times the original