Answer: The area is [tex]15in^2[/tex]
Step-by-step explanation:
The cross section AFGD is a rectangle. Then, its area can be calculated with this formula:
[tex]A=l*w[/tex]
Where:
"A" is the area of the rectangle.
"l" is the lenght of the rectangle.
"w" is the width of the rectangle.
Then, from the figure, you can identify that the dimensions of the rectangle AFGD are:
[tex]l=5in\\w=3in[/tex]
Therefore, you can substitute these values into the formula [tex]A=l*w[/tex] to find the area of the cross section AFGD. Then, you get:
[tex]A=(5in)(3in)\\A=15in^2[/tex]
