How to use calculator:

1. Run python calculate.py
2. Enter the figure name. Available are Circle, Square.
3. Enter the function: Area or Perimeter.
4. Enter figure sizes. Radius for circle, one side for square.
5. Get the answer!

Math formulas

Area

• Circle: S = πR²
• Rectangle: S = ab
• Square: S = a²
• Triangle: S = sqrt(p * (p-a) * (p-b) * (p-c)) where p is semiperimeter

Perimeter

HEAD

• Circle: P = 2πR
• Rectangle: P = 2a + 2b
• Square: P = 4a

Some change for Lesson 6 practice

• Circle: P = 2πR
• Rectangle: P = 2a + 2b
• Square: P = 4a
• Triangle: P = a + b + c

94b208f (L-04: Experimental commit)