Please give all steps. Also, please be specific on what to enter into Matlab and

Question

Please give all steps. Also, please be specific on what to enter into Matlab and what not to enter.

Write a function called area_yourID# which will find the area in acres and the perimeter in feet of a plot of land, given the x-y coordinates for points P1, P2. P3, and P4. comprising the four corners of the land. Make the function inter-active such that the user is told what the function is about, and then prompted to type the values for these 8 values from the keyboard. Submit the assignment into the dropbox.

Explanation / Answer

dropbox-link: https://dl.dropboxusercontent.com/u/78383401/chegg/matlab/t.m

driver matlab script: file t.m

%taking data from the user for vertices coordinate in feets
input_p1_x = str2double(input('Enter x coordinate for vertex P1: ','s'));
input_p1_y = str2double(input('Enter y coordinate for vertex P1: ','s'));
input_p2_x = str2double(input('Enter x coordinate for vertex P2: ','s'));
input_p2_y = str2double(input('Enter y coordinate for vertex P2: ','s'));
input_p3_x = str2double(input('Enter x coordinate for vertex P3: ','s'));
input_p3_y = str2double(input('Enter y coordinate for vertex P3: ','s'));
input_p4_x = str2double(input('Enter x coordinate for vertex P4: ','s'));
input_p4_y = str2double(input('Enter y coordinate for vertex P4: ','s'));
p1=[input_p1_x,input_p1_y];
p2=[input_p2_x,input_p2_y];
p3=[input_p3_x,input_p3_y];
p4=[input_p4_x,input_p4_y];
[ans_area,ans_parameter]=Area(p1,p2,p3,p4);

disp(sprintf('The parameter of quadrilateral is: %f feets',ans_parameter));
%acres = (square feet) / 43560
disp(sprintf('The parameter of quadrilateral is: %f acres',ans_area/43560 ));

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dropbox-link: https://dl.dropboxusercontent.com/u/78383401/chegg/matlab/Area.m

function Area.m: file Area.m

function [ans_area,ans_parameter]= Area(p1,p2,p3,p4)
    %simply adding euclidean distance between neighbouring vertices
    ans_parameter=sqrt((p1(1)-p2(1))^2+(p1(2)-p2(2))^2)+sqrt((p2(1)-p3(1))^2+(p2(2)-p3(2))^2)+sqrt((p3(1)-p4(1))^2+(p3(2)-p4(2))^2)+sqrt((p4(1)-p1(1))^2+(p4(2)-p1(2))^2);
    %standard formula for area calculation of quadrilateral given the
    %vertices
    ans_area=0.5*abs((p1(1)-p3(1))*(p2(2)-p4(2))-(p2(1)-p4(1))*(p1(2)-p3(2)));
end

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Output:

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