Given the Shape datatype definition below, write a function area = fn: Shape real that...

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Given the Shape datatype definition below, write a function area = fn: Shape → real that takes a Shape argument and computes the area appropriately, as illustrated below. The area of a circle is л r². Use Math.pi for л. datatype Shape Circle of real I Rectangle of real real area should behave as follows: val c= Circle 3.0; val c Circle 3.0: Shape val r Rectangle (6.0, 7.0); = val r = Rectangle (6.0.7.0): Shape - area c; val it - area r; val it 42.0 real 28.2743338823 real Given the Shape datatype definition below, write a function area = fn: Shape → real that takes a Shape argument and computes the area appropriately, as illustrated below. The area of a circle is л r². Use Math.pi for л. datatype Shape Circle of real I Rectangle of real real area should behave as follows: val c= Circle 3.0; val c Circle 3.0: Shape val r Rectangle (6.0, 7.0); = val r = Rectangle (6.0.7.0): Shape - area c; val it - area r; val it 42.0 real 28.2743338823 real

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Heres an example implementation of the area function in Haskell data Shape Circle Float Rectangl... View the full answer