The width of a rectangle is of its length. If the length of the rectangle is cm, find the width of the rectangle and its area.
Step 1: Find the width. The width is of the length, so multiply by .
To multiply a whole number by a fraction, put the whole number in the form of a fraction whose denominator is 1, multiply the numerators of the two fractions to find the numerator of the product, and multiply the denominators of the two fractions to find the denominator of the product.
Step 2: Find the area. Multiply the length by the width.