If each side of a cube is increased by 10% the volume of

If each side of a cube is increased by 10% the volume of the cube will increase by

Single equivalent increase for 10% and 10%

=		10 + 10 +	10 × 10		% = 21%
			100

Again, single equivalent increase for 21% and 10%

=		21 + 10 +	21 × 10		%
			100

= 31 + 2.1 = 33.1%
Aliter : Using Rule 14,
Increase % in volume

=		3 × 10 +	3 × 10²	+	10²		%
			100		(100)²

=		30 + 3 +	1		% = 33.1%
			100

Note : Volume of cube = (Edge)³

Hence, formula		x + y +	xy		% should be used twice.
			100