To find the area of the letter H, we can decompose it into three simple shapes: two rectangles for the vertical sides and one rectangle for the horizontal bridge.
First rectangle:
Height = 6.0
Width = 0.8
Area = 6.0 x 0.8 = 4.8 square centimeters
Second rectangle:
Height = 6.0
Width = 0.8
Area = 6.0 x 0.8 = 4.8 square centimeters
Third rectangle (bridge):
Height = 2.1
Width = 0.5
Area = 2.1 x 0.5 = 1.05 square centimeters
Total area = 4.8 + 4.8 + 1.05 = 10.65 square centimeters
Therefore, the artist will need 10.65 square centimeters of gold leaf.