(define pi 3.141592653589)
;doesn’t matter how pi is defined
(define pi (/ 355 113.0))
(define pi (/ 22.0 7))
(define radius 10)
(define circumference (* 2 pi radius))
(define height 20)
(define areaCylinder1 (+ (* circumference height) (* 2 pi (* radius radius))))
(define areaCylinder2 (+ (* (* 2 (/ 22.0 7) 10) 20) (* 2 (/ 22.0 7) (* 10 10))))
(define a “hello\n”)
(define b ” world”)
(display a)(display b)
;(< a b)
(newline)
(display (+ 7 4))
(define userInput (read))