What is the approximate circumference of a circle with diameter fourteen centimeters?
Use twenty-two sevenths to approximate pi.

eleven centimeters

twenty-two centimeters

thirty-three centimeters

forty-four centimeters

please help me

Question

What is the approximate circumference of a circle with diameter fourteen centimeters?
Use twenty-two sevenths to approximate pi.

 eleven centimeters

 twenty-two centimeters

 thirty-three centimeters

 forty-four centimeters



please help me

anonymous · Answer

someone please help me

mathstudent55 · Answer

The circumference of a circle is
$C = \pi d$

where C = circumference
d = diameter

anonymous · Answer

so is that the answer

mathstudent55 · Answer

All you need to do is to multiply the diameter by pi.

mathstudent55 · Answer

I gave you the formula above.
Now you need to insert the numbers you are given in your problem, and calculate answer.

anonymous · Answer

what is the pi.

mathstudent55 · Answer

Did you actually read the problem? It tells you what number to use for pi.

mathstudent55 · Answer

Pi is the ratio of the circumference to the diameter of any circle.

anonymous · Answer

so 14*22/7

mathstudent55 · Answer

Your problem tells youi to use 22/7 for pi.

mathstudent55 · Answer

Correct.

anonymous · Answer

ok thank you

mathstudent55 · Answer

Now multiply it out and reduce the fraction.

mathstudent55 · Answer

You're welcome.