Answer:
Volume becomes 3 times of original volume .
Step-by-step explanation:
Length of rectangular prism = 3 cm
Width of rectangular prism = 6 cm
Height of rectangular prism = 10 cm
Volume of rectangular prism = 
= 
= 
Now one of the dimensions is tripled i.e. one of the dimensions becomes 3 times
So, Volume of rectangular prism = 
= 
= 
Hence one of the dimensions is tripled Volume becomes 3 times of original volume .