I'll give you brainiest and 20 points if you answer this

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1