the formula for that is C= d times 3.14 but i will let you do your homework to yourself.
No cheating!
If the circle has a diameter of 10, the answer would be about 31.4
Radius is one-half of the diameter of a circle. Therefore, the radius of an eight-inch diameter circle is four inches. The diameter of a circle is a straight line joining a point on the circumference through the centre to the 'opposite' point on the circumference.
Divide the known circumference by pi to find the diameter of the circle.
To Find Diameter:Multiply circumference by 0.3183, ordivide circumference by 3.1416Other things to do with circles:To find Circumference:Multiply diameter by 3.1416, ordivide diameter by 0.3183To Find Radius:Divide diameter by 2, ormultiply circumference by 0.15915, ordivide circumference by 6.28318
The equivalent of a "perimeter" in a circle is actually called its circumference. To get the diameter, just divide the circumference by pi.
The circumference of every circle is its diameter multiplied by (pi). For (pi), use 3.142 or 22/7 .
a circle with circumference of 25.56 inches.
Multiply the diameter by pi to find the circle's circumference
The formula to find the circumference of a circle is C = πd, where d is the diameter. Using this formula, the circumference of a circle with a diameter of 18 in is C = π × 18 = 56.52 in.
In order to find the diameter of a circle, you have to take the circumference of the circle and divide by Pi for which you can use the approximation: 3.14. So if the circumference of the circle is 60 inches, you divide that by Pi (3.14) and get a diameter of 19.0985 inches.
The circumference and area of a circle with diameter of 12 inches are:C = 37.7 inchesA = 113.1 square inches
Divide the circumference (38") by Pi (about 3.1416) to get the diameter in inches.
Multiply the diameter by Pi:8 inches x Pi (about 3.1416) = 25.1328 inches circumference
Divide the circumference by Pi.
circumference = 4*pi inches
The circumferecne of a circle with diameter d is pi*d So diameter = circumference / pi = 36/pi = 11.46 inches. Radius = diameter/2 = 5.73 inches.
Multiply it by Pi.
Multiply the diameter by Pi (about 3.1416). The result is the circumference:3 x 3.1416 = 9.4248 inches circumference