Question

an iron cylinder of mass 847 g and density 2g/ cm ³ has radius of 7 cm . calculate it's height​

Answer 1

Explanation:

we know volume of a cylinder, v= πr^2h

also density is given by, p= mass/volume

So, p=m/v

=847/v

So, also v= πr^2h=847/2

=423.5

h=423.5/πr^2

h=423.5/(π*49)

h=2.75cm