Centimeters measure length, grams measure weight- the two do not interchange. Sort of like how many inches in a gallon.
A:
If you are talking about cubic cm, you would need to know what the substance is. For example, 1 cubic cm of water weighs exactly 1 gram. But, as was stated above, just to say cm is a measure of length and cannot be converted. Even square cm cannot be converted as that would only measure area. You need a 3 dimensional measurement.
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1m = 100 cm 1 sq m = 1 m × 1 m = 100 cm × 100 cm = 10,000 cm² 10 cm × 10 cm = 100 cm² → 1 sq m ÷ 100 cm² 10,000 cm² ÷ 100 cm² = 100 → weight the piece of cloth that is 10 cm by 10 cm in grams and multiple it by 100 to find out how many grams a piece of the same cloth which is 1 m by 1 m (1 square metre in area) weighs. You then know its gsm.
11.34 grams
This question does not make sense. You can't relate weight to area without knowing how many grams there are in 1 unit of area.
1 m = 100 cm so 1 sq m = 1 m * 1 m = 100 cm * 100 cm = 10,000 sq cm. Multiply the gms/sqcm figure by 10,000 to get gms/sq metre.
Mercury has a density of 13.55 grams per cu cm, so 1 liter (1,000 cu cm) weighs 13,550 grams or 13.55 kg.