A rectangular flag is 34in. long and 9in. wide.

Question

If a triangle is cut out of the center of the flag that has a base of 9in. and a height of 4in., what is the remaining area of the flag?

Answer 1

The area of the flag can be bound by multiplying 34 x 9 because it is a rectangle.  Therefore, the area of the flag is 306 inches.  The formula for the area of a triangle is 1/2bh.  Therefore the area of the triangle is (1/2)(9)(4)=18.  You need to subtract the area of the triangle from the area of the rectangle to find the remaining area, so 306 - 18 = 288.  The remaining area of the flag would be 288 inches.