You can find this by subtracting the are of the triangle from the area of the rectangle.
The area of the rectangle can be found using the formula l x w.
l x w Replace the l and w with the length and width of the rectangle
11 x 12 Multiply
132 in.²
The area of the triangle can be found with 1/2 (B x h).
1/2 (b x h) Plug in the base and height of the triangle
1/2 (6 x 8) Multiply 6 and 8
1/2 (48) Find 1/2 of 48
24 in.²
Now, subtract the are of the triangle (48) from the area of the rectangle (132).
132 - 48 Subtract
84 in.²
The are of the leftover paper is 84 inches².
