Math 6
I need these answers quick pls

Which equation can be used to calculate the area of the shaded triangle in the figure below?

A rectangle with length of 18 feet and width of 6 feet. A diagonal cuts the rectangle into two halves. One of the triangular halves is shaded.



a
2(18 + 6) = 48
b
fraction 1 over 2 (18 + 6) = 12

c
fraction 1 over 2 (18 × 6) = 54

d
2(18 × 6) = 216