Answer:
1/2 maybe
Step-by-step explanation:



which means either

or

. The equation has no solution, since

is always bounded between -1 and 1. The second has one solution at

, and any number of complete revolutions will also satisfy this equation, so in general the solution would be

where

is any integer.
So you could choose

and

.
Answer:

Step-by-step explanation:
combine like terms. not trying to be mean, but that all you have to do.
Answer:
per = 18a 7a+2a+7a+2a
area = 14
7a*2a
Step-by-step explanation: