A block of foam rubber has a mass of 90 g, determine the mass of 1 m3 of foam rubber in kilograms

A block of foam rubber has a mass of 90 g, determine the mass of 1 m3 of foam rubber in kilograms, the dimensions of a block are 10 cm. 15 cm. 20 cm.

Determine the volume of the bar:
10 * 15 * 20 = 3,000 cubic meters. centimeters.
Now let’s translate the cube. centimeters to cubic meters meters. We know that 1 cubic meter. m = 1,000,000 cubic meters cm.
3,000 / 1,000,000 = 0.003 cubic meters meters – the volume of the bar.
Next, let’s translate the weight of the bar (90 g) into kilograms. In one kg 1000 grams, it turns out:
90/1000 = 0.09 kg.
Now we solve with the help of proportion. how many kg does 1 cubic meter weigh? m. foam rubber:
1 * 0.09 / 0.003 = 30 kg.
Answer: 30 kg.