Question

the density of the copper is 9.86

Answer 1

Answer:

Hmm, you didn't tell us the units of density nor thee dimensions and units of the cuboid. But here's how you'd do it.

density = mass/volume

density · volume = mass

density = 9.86 (units?)

volume = (side length)3

(9.86)·(side length)3 = mass

You didn't tell us the side length of the cuboid, but just plug it into the above formula to find the mass. The catch is that the units of the side length must be the same unit of length used in the units of the density (such as meters), which you didn't tell us. The answer (mass) will be in the same units of mass used for the density such as kg).

Answer 2

Answer:

Step-by-step explanation:

answer= 1.479kg or 1479g

Assuming this is one of the mathswatch questions, you must first times together all the side lengths, so

10x3x5= 150cm which is the volume.

you plug this into the equation density x volume= mass, so

9.86 x 150= 1479g.

however the question asks for the answer in kg, so you divide it by 1000 to get 1.479kg.

hope this helps.