Both of her statements are incorrect.
For the area, we find the separate area of each shape this figure is made of. The formula for the area of a triangle is A=1/2bh, so we plug in our information:
A=1/2(12)(9) = 54in²
The formula for the area of a parallelogram is A=bh; with our information,
A=10(12) = 120in²
The formula for the area of a square is A=s²; with our information,
A = 12² = 144in²
We add all of these together for a combined area:
54+120+144 = 318in²
For the perimeter, we add up all of the sides:
9+15+16+12+12+12+16 = 92 in.
