Estimate the circumference. Use 3.14 or 22/7 to approximate π.

A.
220 ft

B.
440 ft

C.
879 ft

D.
1758 ft

Question

Estimate the circumference. Use 3.14 or 22/7  to approximate π.
  

 
 A.
220 ft
 
 B.
440 ft
 
 C.
879 ft
 
 D.
1758 ft

anonymous · Answer

Does it give you any more information?

anonymous · Answer

circumference of what? need a radius or diameter to do anything. While Pi is yummy it isn't enough to solve it :D

anonymous · Answer

yes sorry

anonymous · Answer

Okay, what's the information? @torifamelol

anonymous · Answer

Sorry my openstudy is slow

anonymous · Answer

@iGreen.

anonymous · Answer

So the radius is 140.

What's 140 * 2?

anonymous · Answer

mine too! Okay. To know the circumference of a circle, you need to multiply the radius by 2 to get the diameter. Then Multiply that amount by 3.14 or 22/7 if you're feeling saucy. See if it is close to any of those answers.

anonymous · Answer

140 * 2 = 280

Now we multiply by 3.14

What's 280 * 3.14?

anonymous · Answer

280

anonymous · Answer

879.2

anonymous · Answer

Yes, so that's our answer.

anonymous · Answer

on timed questions you can multiply just the diameter by 3 to get a rough idea, note that 280*3 = 840, which is closer to 879 than anything else.

anonymous · Answer

thanks