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16 cm
Molly wants to make a special card for Valentine's
Day. She starts with a square piece of red paper
with a side length of 16 cm. She then pastes two
white semi-circles, each with radius of 4 cm, and a
white triangle onto the square sheet of red 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.
16 cm