Respuesta :

farris231

Answer:

135ft^2

Step-by-step explanation:

area of trapzoid= (a+b)/(2)×h

area of traingle= 1/2(b)(h)

area of the shaded region equals (a+b)/(2)×h-1/2(b)(h)

so

(8+18)/(2)×15-(1/2)(8)(15)

=135ft^2