Determine the difference in area between a square having a diagonal of cm and a rhombus having diagonals of cm and cm.
Step 1: Find the area of the square. Use the formula for the area of a square using its diagonals.
Step 2: Find the area of the rhombus. Use the formula for the area of a rhombus using its diagonals.
Step 3: Find the difference between the areas. Subtract the area of the rhombus from the area of the square.