Tracy loves Donuts. She purchased a lots of Donuts for her birthday party. She learnt to calculate the area of the circle a few days back and she is fascinated to know the area of the donuts as well !! Help her finding the area of the Donuts…..

-----Input:-----
- First line will contain, number of testcases. Then the testcases follow. 
- Each testcase contains of a single line of input, where in you have to provide the RADIUS of the Donuts. 

-----Output:-----
For each testcase, output in a single line answer is the AREA of the Donut.

-----Constraints-----
1 <= Radius <= 20.

-----Sample Input:-----
2
5 
12

-----Sample Output:-----
78.5

452.16

Difficulty: interview

Starter code:

Solutions:
oo = int(input())
for i in range(oo):
	val = int(input())
	print((val**2)*3.14)

for _ in range(int(input())):
    n=int(input())
    print((n*n)*3.14)

# cook your dish here
import math
for _ in range(int(input())):
    r=int(input())
    if r>=1 and r<=20:
        print(3.14*(r**2))

# cook your dish here
import math
for _ in range(int(input())):
    r=int(input())
    if r>=1 and r<=20:
        print(3.14*(r**2))

# cook your dish here
import math
for _ in range(int(input())):
    r=int(input())
    if r>=1 and r<=20:
        print(3.14*(r**2))

# cook your dish here
import math
for _ in range(int(input())):
    r=int(input())
    if r>=1 and r<=20:
        print(3.14*(r**2))

number_of_test_cases = int(input())

for i in range(0,number_of_test_cases):
    radius = int(input())
    area = 3.14 * radius * radius
    print(round(area,2))

# cook your dish here
test=int(input())
while test:
    r=int(input())
    print(round(3.14*r*r,2))
    test-=1

t=int(input())
while(t>0):
	n=int(input())
	print(n*n*3.14)
	t-=1

# cook your dish here
for i in range(int(input())):
    print(pow(int(input()),2)*3.14)

t=int(input())
while(t):
    r=int(input())
    print(3.14*r*r)
    t-=1

# cook your dish here
PI = 3.14
t = int(input())
for x in range(t):
    r = int(input())
    print(PI * r ** 2)

# cook your dish here
n = int(input())
for i in range(n):
    r = int(input())
    print(3.14*r*r)

t=int(input())
while(t):
    r=int(input())
    print(3.14*r*r)
    t-=1

t= int(input())
for i in range(t): 
	r= float(input())
	print(3.14*(r**2))

# cook your dish here
n=int(input())
for i in range(n):
    r=int(input())
    print(3.14*(r**2))

for _  in range(int(input())):
	print(int(input())**2*3.14)

N=int(input())
while(N>0):
    N=N-1
    i=int(input())
    a=3.14*(i*i)
    print(a)


# cook your dish here
for t in range(int(input())):
    r=int(input())
    area=3.14*(r**2)
    print(area)
    


for _ in range(int(input())):
    x=int(input())
    print(3.14 * x ** 2)



# cook your dish here
t=int(input())
for _ in range(t):
    n=int(input())
    print(3.14*n*n)


# cook your dish here
for _ in range(int(input())):
    n=int(input())
    print(n*n*3.14)

try:
    t=int(input())
    while t!=0:
        r=int(input())
        area=3.14*r*r
        print(area)
        t=t-1
except:
    pass