Patricia drove 75 miles, then increased her speed by 25 miles per hour for 300 miles. if the second part of the drive took 3 hours longer than the first part, find her average speed.

The area of the shaded triangular section is 72 square inches

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The rectangular stained glass can be divided into 24 identical triangular parts

step 1

Determine the area of complete rectangle

step 2

Divide the area of complete rectangle by 24

therefore

The area of the shaded triangular section is 72 square inches