Please look closely at the numbers: donot copy from other posts they have different numbers. Please use DR Racket and screen shot input and output. Thanks

In the beginning of each part of this problem, introduce a named value sqr3, which is 1.732. You will have to write a function my_calc that takes two numerical parameters. If the first parameter is 1, calculate the area of an equilateral triangle, whose side equals the second parameter of the function. If the first parameter is 2, calculate the area of the hexagon, whose side equals the second parameter of the function. For other values of the first parameter and for a non-positive second parameter return a false Boolean value.

(a) [10 points] Implement a function my_calc using a multiple-way selection structure when checking the value of the first parameter.

(b) [10 points] Implement a function my_calc using a two-way selection structure when checking the value of the first parameter.