Computing areas

Write a program that reads several descriptions of rectangles and circles, and for each one prints its corresponding area.

Input

Input begins with a number $n$ , followed by $n$ descriptions. If of a rectangle, we have the word “rectangle” followed by two strictly positive real numbers: its length and its width. If of a circle, we have the word “circle” followed by a strictly positive real number: its radius.

Output

For each description, print its area with 6 digits after the decimal point.

Problem information

Author: Unknown
Translator: Salvador Roura

Generation: 2026-01-25T10:39:22.387Z