Multiply the radius by itself, then multiply the result by Pi.
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
you can divide the perimeter(circumference) by pi(3.14) and then once you get your answer you divide that by two giving you the length of the radius of the circle. ex: perimeter = 34pi 34pi/pi 34/2=diameter 16=radius
perimeter = pi * diameter, or 2 * pi * radius
To find the radius of a semicircle using its perimeter, first note that the perimeter ( P ) of a semicircle is given by the formula ( P = r + \pi r ), where ( r ) is the radius. This simplifies to ( P = r(1 + \pi) ). Rearranging this equation, you can solve for the radius by using ( r = \frac{P}{1 + \pi} ). Thus, if you know the perimeter, you can easily calculate the radius.
Radius = 40/2pi cm
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
No.
The radius is found inside of the perimeter.
you can divide the perimeter(circumference) by pi(3.14) and then once you get your answer you divide that by two giving you the length of the radius of the circle. ex: perimeter = 34pi 34pi/pi 34/2=diameter 16=radius
perimeter = pi * diameter, or 2 * pi * radius
Radius = 40/2pi cm
To find the perimeter of the curved section of the semi-circle: Perimeter of semicircle = Pi x radius If you also need to the find the perimeter of the straight part of the semicircle (the diameter), it is simply double the radius.
perimeter.
Radius is the shortest distance via straight line between the center point of the circle and its perimeter. Diameter is the greatest distance via straight line from one perimeter of the circle to the opposite perimeter. Diameter = 2x Radius.
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
Circumference or perimeter = 2*pi*radius or pi*diameter
The circumference of a circle with a radius of 5cm is: 31.42 cm