Step-by-step explanation:
it is the area of the large rectangle minus the white triangle.
the area of the large rectangle is
17×7 = 119 in²
the area of the white triangle is
baseline × height /2 = 17 × (7-3) / 2 = 17×4/2 = 17×2 =
= 34 in²
so, the area of the gray area is
119 - 34 = 85 in²
