A circle with a radius of 4 units has a circumference of 25.13 units.
26.7 mm
If you have the radius, then area = pi*r2 which you then round to the nearest hundredth. If you do not know the radius but do know the diameter or circumference, you can calculate the radius. Otherwise you need to measure it.
the answer for the area is 615.8 and the answer for the circumference is 88 inches when you round!!!!
Circumference of a circle that is 8 inches of what? 8 inches in diameter? 8 inches in radius? Please clarify your question next time.If it's 8 inches in diameter, the circumference would be as follows:Circumference of a circle = pi (sorry but I don't know how to type the symbol) x diameter = 3.14 x diameter (if you round pi)Therefore if diameter=8, circumference = 3.14 x 8 = 25.12 inches.If the 8 inches is the radius, you multiply that by 2 to get the diameter and use the same formula to find the circumference. (Diameter = 8 x 2 = 16 inches, Circumference = 3.14 x 16 = 50.24 inches.)
circumference = 2*pi*radius. If we round pi to 3.14, the radius is 31.4/(2*3.14)=5.
The circumference is 50.24 meters.
A circle with a radius of 4 units has a circumference of 25.13 units.
Circumference of a circle = 2*pi*radius or pi*diameter
Circumference of any circle = 2*pi*radius or diameter*pi
If 34 inches is the radius or diameter of the circle, (or circumference?), it needs to be stated in the question! What is meant by "round circle?"
radius = 5 m so circumference = 2*pi*r = 31.4159 m (to 4 dp)
It depends on what the "32in" refers to: circumference, diameter, radius.
30.46 but round it to the nearest decimal and it will be 30.50
Radius is the distance from the centre of a circle to the outside The circumference of a circle is the distance round the outside of a circle
Circumference = 2 x pi x radius. If you want an estimate, you can round some of the numbers involved - either the radius, or pi, or both.
It depends on what measure the 72 refers to - radius or diameter.