The question posed is..
Find the Area of this shape: (Forgive my crappy art job)
Can someone help me work this problem out? I thought it was basically LxW but according to my book my answer is wrong. How exactly do you work this problem? Why? (any notes/info is helpful thank you.)
cut it into two rectangles and find the area of each
draw a horizontal line to complete the top of the larger rectangle. now we have a 4 by 2 rectangle and a 7 by 3 rectangle
so the area is (4*2) + (7*3) = 8 + 21 = 29 square units
EDIT: sorry badgerigar, didn't see your post
Imagine it was a complete rectangle, i.e., without the upper right corner cut out. It would measure 5 x 7 and thus have an area of 35 square miles.
Now, we have to SUBTRACT the area of the upper right, the part that is removed. That is a rectangle with dimensions 2 x 3 (the 2 is given; the 3 is 7-4, as pointed out elsewhere). The rectangle that is removed, thus, has an area of 6 square miles.
Take the total area of the "complete" rectangle and subtract the removed part:
35 - 6 = 29 square miles.