11. Find the number of pebbles

A roly-poly toy in the form of a cone surmounted on a hemisphere is filled with pebbles. The base radius of the cone is 3.4 $cm$, and the height of the conical part is $6$ $cm$. If each pebble inside the toy occupies 0.5 $cm^3$ space, find the number of pebbles inside the toy.

 

Answer:

 

The number of pebbles $=$ .

 

[Note: Enter the possible number of pebbles as a whole number.]