Answer:
12.25.
Step-by-step explanation:
1) the formula of the volume given in the condition is:
V=2*2/7*10x.
2) If V=70, then
2*2/7*10x=70, where x=12.25.
Answer:

Step-by-step explanation:
A square of a monomial is
that is 
Use properties of exponents:

Note that

Then

So, the monomial is

I can’t see the picture but I’m assuming it’s like this, for example: 5 10 15 20... find the next term
so you see it is going up by 5 so the next term would be 25
20+5= 25
hope this helps!
Answer:
Cluster sampling
Step-by-step explanation:
Choosing groups and sampling whole group.