Write a MATLAB script file for determining the area of rectangles $($Ar$),$ triangles $($At$)$ and circles $($Ac$)$

Ar $=$ bh

At $=$

$1$

$2$

bh

Ac $=$ r$2$

$($a$)$ The code should start by using a menu command to ask the user whether the shapes is a rectangle,

triangle or a circle. Depending on the chosen shape, it will use a conditional selection of if$-$then or

switch$-$case and a function input to get the dimensions b$,$ h and r from the user.

$($b$)$ Through the same conditional selection, the computed area is displayed on screen using fprintf

with three decimal places.