I'll show you how to do it for 15.1 square yards. First you need to know that 1 yard equals 0.9144 meters. This means we can multiply anything by (0.9144 meters / 1 yard) because the numerator and
denominator are the same, so we are multiplying by 1. That means when we multiply anything by (0.9144 meters / 1 yard), we're really just changing the units.
Hope this helps,
Stephen La Rocque.