answersLogoWhite

0


Best Answer

C = 131.95 inches.

User Avatar

Wiki User

โˆ™ 2010-04-30 16:40:48
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides
๐Ÿ““
See all Study Guides
โœ๏ธ
Create a Study Guide

Add your answer:

Earn +20 pts
Q: How many inches is the circumference of a circle if its radius is 21 inches?
Write your answer...
Submit
Related questions

How many square inches in a 10 inch circle?

you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95


How many times does the radius of a circle fit along the circumference of the circle?

It is: circumference/radius = 2*pi


Is About how many inches is the circumference of a circle if its radius is 21 inches?

The circumference is about 131.9 inches. (C = r x 2 x Pi)


How many square inches in a 18 inch circle?

All depends what you mean by 18 inches, is that the circumference, the diameter or the radius


How many lineal inches in a 12 inches circle?

The circumference of a circle, with a diameter of 12 inches, is 37.7 inches.


How do you find the circumference with radius of 18 in if you leave your answer n pie terms how many inches is it?

Circumference = 2*pi*radius or pi*diameter Circumference = 36pi inches


How many sq inches in a 6 circle?

Area of a circle: pi*radius*radius


How many inches is the circumference of an 8 inch circle?

The circumference of an 8 inch circle is: 25.13 inches(diameter x Pi = circumference).


Can there be more than 4 radius in a circle?

Yes, providing that they stem from the center of the circle to its circumference.


How many square inches in a 1.5 inch circle?

Area of circle is pi*radius*radius. hence area of 1.5 inch circle is 7.065 square inches.


How many feet are in a 28 foot Circle?

Circumference of a circle: 2*pi*radius or diameter*pi Area of a circle: pi*radius squared


IF the radius of a circle is multiplied by 8 then how many times larger is the circumference of the new circle?

8 times


How many feet go around a 20 ft circle?

Circumference of a circle = 2piradius or pi*diameter


How many linear feet in a 20 foot circle?

Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius squared


How many miles in a 21 mile radius?

If the area is a circle and the radius of the circle is 21 miles, the distance around the circle (circumference) is 131.95 miles. The area of that circle is 1,385.4 square miles.


How many inches around is a 17 inch diameter circle?

circumference = 17pi inches


How many inches is the circumference of a circle with a 6 inch diameter?

(6 pi) inches.


How many square inches are in a 4 inch circle?

Area of circle in square inches = pi*radius squared


How many centimeters are in a radius?

A radius is not a specific unit of measurement - the radius of a circle is the measurement from the centre of the circle to any line on the circle's circumference. The word "radius" is derived from the Latin word for "ray" but was also used to refer to the spoke of a chariot wheel.


How many inches are a diameter?

The inches in a diameter = 2 X inches in the radius. Or, inches in a diameter = inches in circumference / pi


How many times will a circle with a diameter of 10.5 cm fit around a sphere with a radius of 5.25 cm?

Infinity because the circumference of the circle is the same as the circumference of the sphere.


How many square inches in a 7 circle?

Area of a circle: pi*radius squared


How many mm are in a 2 inch circle?

The answer will depend on whether you require the radius, diameter or circumference.The answer will depend on whether you require the radius, diameter or circumference.The answer will depend on whether you require the radius, diameter or circumference.The answer will depend on whether you require the radius, diameter or circumference.


How many sq feet in a 9' circle?

You should say if the 9 feet is a radius, diameter or circumference.....if radius then 254.47 feet


If the radius of a circle is six inches then the diameter is how many feet?

The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.