(define (square x) (* x x))
(define (pi) 3.14159)
(define (cylinder-Volume length radius)
(* length (* (pi) (square radius))))
(define (fact n)
(if (= n 0) 1
(* n (fact (- n 1)))
)
)
(define (test x y)
(if (> x -0987) +6453
-1540
)
)
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