How to calculate the weight of deformed bar

Deformed Bar basically Know as Reinforcement bar.it is the main Raw material in Construction field so as a student of engineering you must know the weight of a reinforcement bar. here i have share a weight list of deform bar below.

PRODUCT NAME	SIZE (Diameter)	THEORETICAL WEIGHT (KG/M)	12 MTR Weight	KG/Feet
Ms Deform Bar	6mm	0.222	2.664	0.0666
Ms Deform Bar	8mm	0.395	4.74	0.1185
Ms Deform Bar	10mm	0.62	7.44	0.186
Ms Deform Bar	12mm	0.89	10.68	0.267
Ms Deform Bar	14mm	1.21	14.52	0.363
Ms Deform Bar	16mm	1.58	18.96	0.474
Ms Deform Bar	18mm	2	24	0.6
Ms Deform Bar	20mm	2.47	29.64	0.741
Ms Deform Bar	22mm	2.98	35.76	0.894
Ms Deform Bar	25mm	3.85	46.2	1.155
Ms Deform Bar	28mm	4.83	57.96	1.449
Ms Deform Bar	32mm	6.31	75.72	1.893
Ms Deform Bar	40mm	9.87	118.44	2.961

The formula for steel weight per meter in kg is following:
steel weight =(Dia)2/162×Length W =( D)2 L/162 kg
The formula for steel weight per foot in kg is following
steel weight =(Dia)2/533×Length W =( D)2 L/533 kg

For Example 6mm Deform Bar weight

MS deform bar 6mmx12mtr weight 6×6/162×12 = 2.666666667 MS deform bar 6mmx40 foot weight in KG 6×6/533×40= ??