ANSWER:-
[tex]\small{\tt{V = \frac{1}{3} * base \: Area * Height[/tex]
[tex]\small{\tt{V_{1} = \frac{1}{3} * base \: Area * 5[/tex]
[tex]\small{\tt{V_{2} = \frac{1}{3} * base \: Area * 15[/tex]
[tex]\small{\tt{Factor = \frac{V_{2} }{V_{1} } = \frac{\frac{1}{3} \: * base \: Area \: * \: 15 }{\frac{1}{3} * Base \: Area * \:5 }[/tex]
[tex]\small{\tt{Factor = \frac{15}{5} = 3[/tex]
[tex]\small\green{{\fbox{\tt{Hope Its Helpful To You}}}}[/tex]