**Definitions:**

**Millimeter Square** (abbreviation: **mm2**): is the SI derived unit of area. It is the area of a square whose sides measure exactly one millimeter. The square millimeter is derived from the SI base unit of the metre, which itself is the length of the path travelled by light in absolute vacuum within time interval of 1/299,792,458 * 1/1000 of a second.

**Yard Square** (abbreviations: **yd2, or sy**): is an imperial unit of area, formerly used in most of the English-speaking world but now generally replaced by the square metre, however it is still in widespread use in the U.S., Canada and the U.K. It is the area of a square with sides of one yard (three feet, thirty-six inches, 0.9144 metres) in length.

## How to Convert Millimeters Square to Yards Square

*Example: How many yards square are equivalent to 77.47 millimeters square?*

As;

1 millimeters square = 1.0E-6 yards square

77.47 millimeters square = Y yards square

Assuming Y is the answer, and by criss-cross principle;

Y equals 77.47 times 1.0E-6 over 1

(i.e.) Y = 77.47 * 1.0E-6 / 1 = 7.747E-5 yards square

Answer is: 7.747E-5 yards square are equivalent to 77.47 millimeters square.

*Practice Question: Convert the following units into yd2:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 61.42 mm2

( ii ) 18.34 mm2

( iii ) 31.26 mm2