https://prnt.sc/luati5
89 ft2 79 ft2 49 ft2 59 ft2
The scale factor of the smaller triangle to the larger is 12/16 = 3/4
The area of the smaller =
Area of larger x ( scale factor of smaller to larger)^2 =
105 * (3/4)^2 =
105 * 9/16 ≈ 59 ft^2