Answer:
B
Explanation:
The figure has a triangle on a square, so we have to find each of their areas and then add them.
The square is 18 inches on every side, so we multiply 18 * 18 to get its area, which is 324.
The triangle's length is 27 inches, and the base is equal to one side of the square (18 inches) plus both lateral sides, each of them equal 9 inches so it's 18 inches more (36). The area of a triangle is equal to its length * base * 1/2, so its 27 * 36 * 1/2 = 486.
Finally, we just add the area of the triangle with the area of the square, which is 486 + 324 = 810, the final result.