Triangle area = 1/2 times base times height
Triangle area = 1/2 x 5 1/2 x 3/14 (does not look like correct number)
Triangle area = 0.5 x 5.5 x 0.21
Triangle area = 0.5775
Did you mean:
Triangle area = 1/2 x 5 1/2 x 3 1/4 ???
Then
Triangle are = 0.5 x 5.5 x 3.25
Triangle area = 8.9375
You might need to keep it in fractions.