The average density of granite is 2.7 grams per cubic centimeter (your particular granite may vary slightly, so if you want a high level of accuracy, you should measure it, weight divided by volume equals density). If you have the dimensions of granite plate, you can calculate the volume of that plate; length x width x thickness = volume. And then volume times density is weight.
Granite.
The basalt of the oceanic plate is more dense than the granite in the continental plate.
No.
Basalt is more dense than granite as it contains more iron and magnesium. This means that it is likely that the more dense basaltic plate would be forced under the less dense granitic plate.
A load plate, or load cell, is a transducer that is able to convert a force placed upon it to an electrical signal. This signal can be deciphered to offer a weight value in standard measurements.
36,000Km square
4mm chequered plate unit weight
because the rune plate is cheaper and some people think it looks better.
Plates are described in terms of area, not dimension. The North American Plate is 75,900,000 square kilometers in area.
This weight plate tree has a maximum weight capacity of 300 pounds.
3x1250x5000
You need to know the thickness of the chequered plate to calculate weight. As a thumbrule, for 12mm thick chequered plate, you can consider 10 kg per sq.ft. Multiply by area to get the total weight. +++ You cannot mix units like that. You give the dimensions in mm and kg then introduce feet - it should be all Imperial or all metric.