Given that diameter of cylinder = 3cm
So, Radius = 3/2 = 1.5 cm
Given: Height of cone = 2cm
and
Height of the cylinder + height of cone + height of cone = 10cm
Height of the cylinder + 2 + 2 = 10
Height of the cylinder = 6cm
So,
Volume of the cylinder = πr2h
= 4.71 cm3
Volume of 1st cone = Volume of 2nd cone = 4.71cm3
So, Total volume of the model
= Volume of cylinder + volume of 1st cone + volume of 2nd cone
= 42.43 + 4.71 + 4.71
= 51.85cm3