Circumference and Perimeter

Pi,  $\pi$ , is an irrational number.  Give another example of an irrational number.  

Which of the following are irrational? Select all that apply.

• 
  

  $\pi$
  

• $\sqrt{2}$

• $\frac{7}{3}$

• $\sqrt{4}$

• $\sqrt{5}$

What is the circumference of a circle that has a radius of 3 cm? Use 3.14 for  $\pi.$  

(a)  

Tags

CCSS.7.G.B.4

What is the diameter of a circle if the circumference of the circle is  $16\pi\ cm$  ?

(a)  

Tags

CCSS.6.EE.B.7

The radius of a circle is  $\frac{11}{16}cm.$  What is the circumference of the circle? 

•  $\frac{11}{16}\pi\ cm$  

•  $\frac{11}{8}\pi\ cm$  

•  $11\pi\ cm$  

•  $22\pi\ cm$  

The perimeter of the rectangle is (a)   cm.

Tags

CCSS.4.MD.A.3

The perimeter of the square is _______________.

• 5 cm

• 10 cm

• 25 cm

• 20 cm

Tags

CCSS.4.MD.A.3

The perimeter of the shape is ______________.

• 
  

  $10\ cm$
  

• $\left(10+5\pi\right)cm$

• $10\pi\ cm$

• $5\pi\ cm$

The perimeter of the shape is_______________.

• 
  

  $\left(4\pi+4\right)cm$
  

• $3\pi\ cm$

• $\left(3\pi+4\right)cm$

• $2\pi\ cm$

The perimeter of the shape is _______________.

• 
  

  $\left(6\pi+4\sqrt{2}\right)cm$
  

• $4\pi\ cm$

• $8\pi\ cm$

• $\left(8\pi-4\right)cm$