by shill » Tue Apr 06, 2004 3:41 am
If I understand your question correctly...
First of all, we want our units to be in the same format (I'm choosing metric/SI). 3 inches is equal to 0.0762 m. Now, since you have a 2-D measurement (145 m²), we simply multiply it by the thickness to get a 3-D measurement (11.049 m³). "m²" means "square metres" and "m³" means "cubic metres". 11.049 m³ (cubic metres) is equal to 14.45155 yd³ (cubic yards).