the formula is PI(3.14)(radius)squared
first is to find the radius they usually give and you like the fullthing so you have to cut it in half like for example the radius is 14 so you cut in half which is 7.next you take 7 and multiply it by itself which is 49.(be sure to NOT multiply 7x2=14)then you multiply everything together.so here it is.(3.14x49)And that's how you find the radius of a circle.(i think....)
The radius of a circle is half its diameter (the measure of the circle from one side across to the other).
the radius is from the center of the circle to the edge so that's how you find the radius.
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.
Diameter = 2*Radius
The radius is a lenght, and it's impossible to find out the radius if you don't give any information about the size of your circle.
find the radius of a circle with circumference of 42.1
It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.
The director circle of a circle with radius r is a concentric circle with radius r*sqrt(2).
You already know the radius.
Diameter of a circle = 2*radius Circumference of a circle = 2*radius*pi
It is twice the radius of a circle
The radius of a circle is half its diameter (the measure of the circle from one side across to the other).
Equation for the area circle = pi x radius squared If the area is 144pi, then you need to find the square root of 144, which is 12. Therefore, radius = 12
To find the area of a circle for fifth grade, what one has to do is to first find the radius, the radius is the distance from the central point to all points on the circle, once the radius is found, square the radius. Then multiply the squared radius by pi.
diameter is 2 times the radius 24
For a circle, circumference = 2 x pi x radius.
In a circle, the area of the circle is pi times the radius squared