Multiply 1/5 by 11 to get 2.2, to check, multiply 2.2 by 5. The answer though, is 2.2.
Answer:

Step-by-step explanation:
From the question we are told that:
Rate 
Height 
Radius 
Generally the equation for Volume of Cone is mathematically given by


Differentiating



Answer:
Step-by-step explanation:
You need to first put the numbers in suitable catagories
0-120
120-130
130-140
140-150
then figure out the frequency of them
0-120=4
121-130=20
131-140=2
141-150=2
then put in a graph(sry its not very good i was in a rush)