Respuesta :
Answer:
The area of the triangle in Step 3 should be One-half times 6 times 10 = 30.
Step-by-step explanation:
Lyla made a mistake in Step 3, because she used the wrong dimensions to find the area.
Notice that the base of the triangle is 10 feet, the same as the retangle's. And its height is 6 feet.
So, the area of the triangle would be
[tex]A=\frac{1}{2} (6 \times 10) = 30[/tex]
And the total area of the composite figure is
[tex]A_{total}=80+30=110[/tex]
Therefore, the right answer is the second choice.