I found the image of this problem.
Rectangle : Length is 10 inches. Width is 6 inches.
The side where the right angle was cut off had a rectangle length of 8.5 inches, and a rectangle width of 4.5 inches.
Area of the whole rectangle = 10 inches * 6 inches
A = 60 square inches.
Measure of the triangle:
base: 10 inches - 8.5 inches = 1.5 inches
height: 6 inches - 4.5 inches = 1.5 inches
Area of the triangle = 1/2 * b * h
A = 1/2 * 1.5 in * 1.5 in
A = 1/2 * 2.25 sq. inches
A = 1.125 sq. inches
Area of the remaining part of the rectangle :
A = 60 sq. inches - 1.125 sq. inches
A = 58.875 sq. inches CHOICE C.) 58.875 sq. inches
