Problems

# Circle

The radius of a circle r is given. Find the circumference and the area of a circle.

#### Input

The double radius of a circle r (r > 0).

#### Output

Print in one line the circumference and the area of a circle with 4 decimal digits.

Time limit 1 second
Memory limit 128 MiB
Input example #1
1.234

Output example #1
7.7535 4.7839