Write a program that inputs the sizes of a geometric figure and calculates its area. The figures are four types: square, rectangle, circle and triangle.
The first line of the input provides the type of the figure (square, rectangle, circle, triangle).
- If the figure is a square, the next line provides one number – the length of its side.
- If the figure is a rectangle, the next two lines we provide two numbers – the lengths of its sides.
- If the figure is a circle, the next line provides one number – the radius of the circle.
- If the figure is a triangle, the next two lines provide two numbers – the length of the side and the length of its height.
Round the result up to the third digit after the decimal point.
| Input | Output |
|---|---|
| square 5 |
25 |
| rectangle 7 2.5 |
17.5 |
| circle 6 |
113.097 |
| triangle 4.5 20 |
45 |
Test your solution here: https://judge.softuni.org/Contests/Practice/Index/506#12.