PLEASE HELP ITS DUE IN 30 MINS ILL MARK YOU BRAINLIEST

While working in a custom manufacturing plant, you are designing a sign for a construction company. The top face of the sign is in the shape of a triangle; it has a base length of 18 inches and a height of 24 inches. You need to know the area of that face of the sign to create a cost estimate for the customer.

What is the area, in square inches, of the face of the sign?

21
42
200
216
432