how do you work out a radius and diameter don't know at all there is a circle with the number 5mm and they want me to tell them what the radius is and the diameter
What does the 5mm represent?
Is it the circumference?
The common distance of the points of a circle from its centre is called its radius.
Diametar=2*Radius
go to en.wikipedia and type circle in search field.
5×3.14 =d
D÷2=r
To determine the radius and diameter of a circle, you need to understand the relationship between these measurements.
The radius is the distance from the center of a circle to any point on its edge. It is usually denoted by the letter "r". The diameter, on the other hand, is the distance across the circle passing through its center. It is twice the length of the radius and is denoted by the letter "d".
In your case, you mentioned that there is a circle with the number 5mm. Assuming this number represents either the radius or the diameter, we can work out the missing measurement.
1. If 5mm is the radius: Since the diameter is twice the length of the radius, the diameter would be 2 times 5mm, which equals 10mm.
2. If 5mm is the diameter: Since the radius is half the length of the diameter, the radius would be 5mm divided by 2, which equals 2.5mm.
So, depending on whether the given measurement is the radius or the diameter, you can calculate the missing value accordingly.