**Definitions:**

**Inch Square** (abbreviations: **in2, or si**): (plural: square inches) is a unit of area, equal to the area of a square with sides of one inch.

**Centimeter Square** (abbreviation: **cm2**): is the SI derived unit of area. It is the area of a square whose sides measure exactly one centimeter. The square centimeter 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 * 1/100 of a second.

## How to Convert Inches Square to Centimeters Square

*Example: How many centimeters square are equivalent to 39.74 inches square?*

As;

1 inches square = 6.4516 centimeters square

39.74 inches square = Y centimeters square

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

Y equals 39.74 times 6.4516 over 1

(i.e.) Y = 39.74 * 6.4516 / 1 = 256.386584 centimeters square

Answer is: 256.386584 centimeters square are equivalent to 39.74 inches square.

*Practice Question: Convert the following units into cm2:*

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

( i ) 9 in2

( ii ) 17.44 in2

( iii ) 46.31 in2