Question

the density for 9.86g/cm3. work out the mass off the solid copper cuboid in kg

Answer 1

Answer:

GIve me the volume, then the formula will be

d is density

m is mass

v is volume

m/v = d

Answer:

Density \:of \:copper =9.86\frac{g}{cm^{3}}\\=9860\frac{kg}{m^{3}}

Step-by-step explanation:

Density \:of \:copper =9.86\frac{g}{cm^{3}}

=9.86 \times \frac{\frac{1}{1000}kg}{cm^{3}}\\=\frac{9.86}{1000}\:\frac{kg}{cm^{3}}\\=0.00986\frac{kg}{cm^{3}}

Or

=9.86 \times \frac{\frac{1}{1000}kg}{\big(\frac{1}{100}m)\big)^{3}}\\=\frac{9.86\times 1000000}{1000}\:\frac{kg}{cm^{3}}\\=9860\frac{kg}{m^{3}}

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Solution,

Here, Density = 9.86g/cm^3

= 9.86 ÷ 1000

= 0.00986kg/cm^3

length = 10cm

breadth = 5cm

height = 3cm

Weknow,

Volume of cuboid = l × b × h

= 10cm × 5cm × 3cm

= 150cm^3

Now,

Weight of the solid copper cuboid

= 0.00986 ×150

= 1.479kg/cm^3

Hence,

The weight of the solid copper cuboid is 1.479kg/cm^3.

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