Molly wants to make a special card fo Valentine's Day. She starts with square pieces of red paper with a side length of 16 cm. She then pastes two white semi-circles, each with a radius of 4 cm, and a white triangle onto the square sheet of paper as shown below. ( the dashed line and the right angle symbols will not actually be on the finished card). She is going to write her Valentine a message in red ink on the white region of the card. Determine the total amount of area available in the white region for Molly's special valentine greeting.