Question

A cycling has a radius of 2.63 cm and a height of 1.72 cm a) Calculate the volume of the cylinder b) if the cylinder weight 78.53g, calculate its density and specific gravity.

Answer 1

The volume of a cylinder is calculated using the following formula:

`V=\pi* r^2* h`

Where r is teh radius of the base and h is the high:

As we know 1cm³=1ml

to calculate the density we just have to divide the mass by the calculated volume:

`\text{density}=(78.53g)/(37.37ml)=\text{ }2.10\text{ }(g)/(ml)`

The especific gravity is the density in relation to the density of water which is 1 g/ml therefore:

`\text{specific gravity =}\frac{density}{water\text{ density}}=(2,10g/ml)/(1g/ml)=\text{ 2.1}`