if the radius of a circle is tripled what will be the change in circumference

Question

wolf1728 · Answer

Circumference = 2 * PI * radius
It seems that the relationship between circumference and radius is a direct relationship.  So, if the radius is tripled then the circumference will be tripled.

anonymous · Answer

Circumference = pi x diameter so if the radius is 5 then the diameter is 10Circumference = pi x 10 = 31.415 If we triple the radius to 15, then thediameter is 30, so Circumference = pi x 30 = 94.245 Which looks like triple the first circumference. So if the radius is tripled, the circumference is also tripled.

anonymous · Answer

Hope it helps.