Side of square is equal to [a + 4]. Area of square is 20 less than the area of rectangle whose length and breadth is [b + 6] and [c + 3] respectively. Height of a cylinder is equal to the side of square. Volume of cylinder is 19404 m³. Radius of circle is double of height of the cylinder. Perimeter of circle is 176m. Value of b is 20% more than the value of value of a.