Radii are 4m & 8m
Hope I helped! ( Smiles )
First, we should apply the present value of annuity formula. It is

and in this formula

is the present value of annuity factor.
Then, we can find the present value of the annuity by writing that,

<span>
</span>
Answer:
8
19
32
55
Step-by-step explanation:
hope this helps!
Answer:
○ C. 
Step-by-step explanation:
Using the formula
, where <em>n</em> represents the number of tosses, substitute 7 in for <em>n</em> to get this:

I am joyous to assist you anytime.