Today your task is simple. You have to calculate area of circle and rectangle depending upon user's choice.

**Input:**

First line of the input contains an integer T which denotes the number of test cases. Then T test cases follow. Each test case contains two lines. First line contain 1 for circle or 2 for rectangle.Second line contains integers R(radius) or L(length) and B(Breadth)(space separated).

**Output: **

For each test case, print area of circle or rectangle.

**Constraints:**

1 <= T< = 10

1<=R<=10

1<=L<= 10

1<=B<= 10

**Note: **Use Math.PI for pi value.

**Example:**

Input:

2

1

5

2

5 10

**Output:**

78.53981633974483

50

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