// Write a function diagonalSize that takes the sizes of two sides of a rectangle, a and b, and calculates the size 
// of a diagonal (d) that crosses the rectangle.
//    __ 
//   |\d|
//   |_\|a
//    b
//
// You should write your code in place of the comment below that reads // place your code here
// The program below should produce the following output:
// size a = 4; size b = 3
// diagonal size = 5
//
// hint: in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the legs (or catheti)

program();

function program() {
    var a = 4, b = 3;
    console.log("size a = " + a + "; size b = " + b);
    console.log("diagonal size = " + diagonalSize(a, b));
}

function diagonalSize(a, b) {
// place your code here
}