Why is it beneficial to use Satellite Launch Vehicles made of more than one stage ?

Explanation

(i) Satellite Launch Vehicle use a special type of fuel in huge amounts.
(ii) Hence , the maximum weight of the launcher is due to the fuel .
(iii) Due to this, different satage of fuels are made so that as the fuel gets utilized , the weight of the satellite launch vehicle can grandually reduce.
As the fuel in the 1st step is burnt , that part get automatically detached form the launcher . Due to this , satellite launch vehicle can acquir e more velocity .
(v) Thus, ultimately escape vlocity is achieved and satellite can be lauched successfully.