Question

Triangle ABC is inscribed inside of a square. If the sides of the square are 30 inches, what is the area of the triangle?

Answer 1

Keep in mind that a triangle is half the area of a square. So, if the square is 30 inches by 30 inches (900 square inches), the triangle will be 450 inches squared.

Answer 2

Square: 30 * 4 = 120 

Triangle: 30 * 3 = 90