Question

a block is 30cm on each side,and so has a volume of 27,000cm cube.it is made of granite,which has a typical density of 2.8g/cm cube. what is the mass of the block?​

Answer 1

Concept:-

Here, We have given the volume of the block and it is made up of granite whose density is of 2.8g/cm³. We have to find the mass of the block, to find we use certain formula through which we will get our answer.

Given:-

• Volume of the block is 27,000 cm³.
• Density of the granite is 2.8g/cm³.

To Find:-

• Mass of the block ?

Solution:-

Here, To find mass we use certain formula,

$\sf{i.e.,\ \ Mass\ =\ Density\ \times \ Volume}$

So, putting the values in the above formula we get,

$\sf{\Longrightarrow Mass\ =\ 2.8\ g/cm^{3}\ \times\ 27,000\ cm^{3}}$

$\sf{\Longrightarrow Mass\ =\ 2.8\ \times\ 27,000}$

$\sf{\Longrightarrow Mass\ =\ 75,600\ g}$

We know that,

⇒ 1000 g = 1 kg

$\sf{So,\ 75,600\ g\ =\ \dfrac{75,600}{1000}kg}$

                      $\sf{= 75.6\ kg}$

$\sf{i.e.,\ \ 75\ kg\ 600\ g}$

Hence, Mass of the block is of 75 kg 600 g.

Answer 2

Answer:

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