Answer:
42 square inches.
Step-by-step explanation:
The given expression for the area of the triangular sail is \(\frac{1}{2}bh\)
Here b is the length of the base and h is the height.
Now, we have to find the the area of a triangular sail in a model sailboat when b=12 inches and h=7 inches.
Substituting these values in the above expression to find the area of the triangular sail.
\(A=\frac{1}{2}\times12\times7\\\\A=6\times7\\\\A=42\text{ square inches}\)
Therefore, the area of triangular sail in a model sailboat when b=12 inches and h=7 inches is 42 square inches.
