Best Answer

The perimeter of a circle is called the circle's "circumference". It's the distance an ant must walk

on the curved line in order to get back to where he started walking from.

The diameter of the circle is the distance across it through the center. It's the longest line

you can draw that stays completely inside the circle.

The radius of the circle is half of the diameter. It's the distance from the center to any point

on the circle.

The circumference if the circle is (pi) times (the diameter).

The circumference is also (2 pi) times (the radius).

(Pi) is approximately 3.14159 26535 89792 . The decimal never comes out even.

It's also OK to use ( 22/7 ) for pi. That puts you within 0.1% of the correct answer.

User Avatar

Wiki User

โˆ™ 2010-02-03 03:59:50
This answer is:
User Avatar
Study guides


20 cards

Is glucose solution a homogenous mixture

Who were scalawags and carpetbaggers

What other ocean floor feature is formed by movement of earths plates

Properties that describe the appearance of matter are known as what properties

See all cards
47 Reviews

Add your answer:

Earn +20 pts
Q: What is the formula for the perimiter of a circle?
Write your answer...
Still have questions?
magnify glass
People also asked