Area of a circle
Statement
Goal
You have to find area of circle.Hint:
Use pi = 3.142.
Input
r is a radius of a circle.
Output
Area of Circle.
Constraints
None
Example
Input
2
Output
12.568
Game modes
Reverse
Test cases
Test 1 Test
Input
2
Output
12.568
Validator 1 Validator
Input
5
Output
78.55
Test 2 Test
Input
10
Output
314.2
Validator 2 Validator
Input
12
Output
452.448
Test 3 Test
Input
15
Output
706.9499999999999
Validator 3 Validator
Input
20
Output
1256.8
Test 4 Test
Input
22
Output
1520.728
Validator 4 Validator
Input
25
Output
1963.75
Solution language
Solution
Stub generator input