Find the area of a rectangle that is 9 cm wide, which is 1/4 of its length.

1) A rectangle is a quadrangle in which two opposite sides are equal and all four corners are the same. The long side of the rectangle is called the length of the rectangle (a), and the short side is the width of the rectangle (b). Formula for the area of a rectangle in two sides: S = a b

2) First, find the length of the rectangle: 9: 1/4 = 9 * 4/1 = 36.

3) Now that both sides of the rectangle are known, using the formula from paragraph 1, you can find the area: S = 36 * 9 = 324 cm ^ 2.
Answer: 324 cm ^ 2.