If r = 5 cm, find C...

If r = 5 cm, find C. Leave answer in terms of π (pi).


- Circumference Conjecture -

If C is the circumference and d is the diameter of a circle, then there is a
number π such that C =__. If d = 2r where r is the radius, then C =__.

C=2πr

r=5 cm

C=2π(5)=10π

Diameter is always two times the radius of the circle

so if you know r is 5, then just multiply it by two to find the diameter which is 10

Pi = 3.14, but since you leave it in terms of π than you dont have to multiply 3.14 to your diameter

Instead just say 10π. Thats the full answer.

.