The regular octagon below has a perimeter of 80 m. what is the length of one side of the octagon?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

Pls never taught i’m really confused and i rlly need

What is the simplified form of square root of 400 to the 100th power ?