Answer:
-I
Step-by-step explanation:
Given :
I= 
Now

And 
Answer will be -I
Answer:
(c) option
Step-by-step explanation:
A = 4pier²
A/4pie = r²
Under root (A/4pie) = r
(c) option
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>
N equals 7. you need to subtract 0.6 from both sides and then multiply both sides by 5 to get the answer