A pattern for curtains calls for 2/3 of a yard of material. You want to shorten the curtains to2/3 of the height of the pattern. How much fabric is needed?

(2/3)*(2/3) = 4/9 yard

To find out how much fabric is needed, we need to calculate 2/3 of the original amount required.

1. Start by determining the original amount of fabric required for the curtains, which is 2/3 of a yard.

2. Next, calculate 2/3 of 2/3 by multiplying the two fractions.

2/3 * 2/3 = (2 * 2) / (3 * 3) = 4/9

So, 2/3 of the original fabric is 4/9 of a yard.

Therefore, the final answer is 4/9 of a yard.