1. Transpose of m x n (m rows and n columns) atrix involves interchanging rows and columns of a 2 array. The below illustration shows how a 3 x 2 matrix becomes a 2 x 3 matrix after the transpose operation (first row becomes first column and so on) To make the problem slightly easier, you are asked to write a function that accepts an 3 x 3 array (the array has already been fully loaded with values, so there is no need to have cin or cout instruction inside the function) and per a transpose operation. Although you are not asked to display the contents of the array, a sample output is shown below for your reference. Note that you must solve the problem by swapping values in the array instead of moving values to a temporary array and then copying them back to the original array. 25% The ora InaTnatrix contains matrix e tains fter tr pose Press any key to continue 2. Given the length class interface below: class length public length(); 5% length (int f, int i); Postconditin: a new length object is declared and initialized 5% void set Feet (int); known as the "mutator" function Postcondition: feet date member of the calling object is changed void set Inches (int); 5% int get Feet known as the "accessor" function Postcondition: feet data member of the calling object is returned int get Inches bool compare (length& obj2); 10% compare the the calling object to obj3 Postcondition: return true if calling object is longer; return false otherwise 10% void display(); Postcondition: display the contents of the callig object like 5'7" for 5 feet 7 inches Note that the inches part must be less than 12 length add length& obj2); 10% Postcondition: Display the contents of the sum of the calling object and obj2 Note that the inches part must be less than 12 ouble area (length& obj2); 10%. Postcondition: return the area of a rectangle where calling obj represents the width and obj2 represents the length of the rectangle. Area is measure in sqare ft