Maggie wants to create a Valentine's Day card. It begins with a red square-shaped leaf with sides measuring 12 cm. She then glues two white semicircles, each with a radius of 3cm, and a white triangle, as shown below. (The dotted line and right angle symbols will not appear on the final map.) She wants to write her message in red on the white region of the card.
Determine the total area of ​​white space available for Maggie's special message.