Answer:
$2925
Explanation:
To find the cost, we need to get the area of the triangular sale. This can be obtained by using the area of a triangle.
This is A = 1/2 * b * h
Where in this case, b = 12ft and h = 25ft
The area is thus 1/2 * 12 * 25 = 150sq.ft
Now we know that 1sq.ft is $19.50, 150 will be 150 * 19.5 = $2925