Why are same side interior angles important ???

If the transversal intersects 2 lines and the interior angles on the same-side of the transversal are supplementary. Then the angles will be parallel to one another.

It is important because in the same-side interior angles postulate. If the transversal intersects 2 lines and the interior angles on the same-side of the transversal are supplementary. Then the angles will be parallel to one another.

First you need to know the weight in Kilograms of one liter of the substance. Then you multiply that number by 192. For example, water weighs 1 kg per liter. This is an easy conversion, with 192 liters of water weighing 192 kilograms. The weight varies by substance, though, so you need to look up how much what you want weighs.