Circumference Review

Circumference Review

4/6/20201

Formulas

• 1)  $C\ =\ \pi\ \cdot\ d$  

• 2)  $C\ =\ 2\ \cdot\ \pi\ \cdot\ r$  

Multiple Choice

Which equation should I use?

• C = π * d

• C = 2 * π * r

Multiple Choice

Which equation should I use?

• C = 2 *Π* r

• C = Π * D

Multiple Select

When should you use this formula? Check all that apply.

C = Π * r * 2

Multiple Select

When should you use this formula? Check all that apply.

C = Π *d

Lets put it into practice

•  $C\ =\ \pi\ \cdot\ r\ \cdot\ 2$  
  

YOU TRY!

•  $C\ =\ \pi\ \cdot\ r\ \cdot\ 2$  
  

Let practice: Diameter

•  $C\ =\ \pi\ \cdot\ d$  

YOU TRY!!

•  $C\ =\ \pi\ \cdot\ d$  

Reverse it! 

•  $C\ =\ \pi\ \cdot\ d$