Write a program that draws a dartboard. Make sure your dartboard:

Consists of 4 concentric circles
Has the center circle placed in the middle of the canvas with a radius of 25
Has three circles surrounding the middle, that each increase in radius by 25 pixels
Be sure to also:

Use a variable called radius to control the radius of the circles
Use functions in your program
Hints:

Determine how to draw one circle that is centered on the canvas and then add the other circles using the same function.
The circle radii are getting 25 pixels larger each time, so find a way to move Tracy to the correct position before drawing each circle so they are centered!
Ending World
are turtles world is a 400 units grid. the starting point is (0,0) in the center. I have come up with a method that works, however, I need loops in my program if anyone could help that would be awesome
I have:
circle(25)
right(90)
penup()
forward(25)
left(90)
pendown()
circle(50)
right(90)
penup()
forward(25)
left(90)
pendown()
circle(75)
right(90)
penup()
forward(25)
left(90)
pendown()
circle(100)