help with a math problem

Question

my question is to find the circumference circle 29m the exact and then find the approximation useing 3.14

Answer 1

The equation for circumference (C) in terms of radius (r) is:

 

C = 2πr

 

I'm assuming that you meant to say that the radius of your circle is 29m. In that case, just plug r = 29 into the equation:

 

C = 2π(29)

C = 2(29)π

C = 58π meters

 

That's the exact answer. To approximate, plug in π = 3.14:

 

C = 58(3.14)

C = 182.12 meters

 

 

This all changes if 29m is your diameter instead of your radius. In that case, you can divide by 2 to get a radius of 29 ÷ 2 = 14.5 m instead.