Chapter 3 - Mathematical Functions, Strings, and Objects - Programming Exercises - Page 88: 3.14

import turtle as t r = eval(input("Enetr radius: ")) t.speed(10) x = t.xcor() t.penup() t.backward(200) t.pendown() t.pensize(15) t.color("blue") t.circle(r) t.penup() t.forward(x + r * 2.5) t.pendown() t.color("black") t.circle(r) t.penup() t.forward(x + r * 2.5) t.pendown() t.color("red") t.circle(r) t.penup() t.backward(x + r * 4.75) t.left(-90) t.forward(x + 20) t.pendown() t.color("yellow") t.circle(r) t.penup() t.left(90) t.forward(x + r * 2.5) t.left(-90) t.forward(x) t.pendown() t.color("green") t.circle(r) t.done()

# (Turtle: draw the Olympic symbol ) Write a program that prompts the user to # enter the radius of the rings and draws an Olympic symbol of five rings of the # same size with the colors blue, black, red, yellow, and green, as shown in # Figure 3.5c. import turtle as t r = eval(input("Enetr radius: ")) t.speed(10) x = t.xcor() t.penup() t.backward(200) t.pendown() t.pensize(15) t.color("blue") t.circle(r) t.penup() t.forward(x + r * 2.5) t.pendown() t.color("black") t.circle(r) t.penup() t.forward(x + r * 2.5) t.pendown() t.color("red") t.circle(r) t.penup() t.backward(x + r * 4.75) t.left(-90) t.forward(x + 20) t.pendown() t.color("yellow") t.circle(r) t.penup() t.left(90) t.forward(x + r * 2.5) t.left(-90) t.forward(x) t.pendown() t.color("green") t.circle(r) t.done()