Here is how to work the problems and write the expressions.
Answer:
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Answer:
Its definitley square to be precise so that's my answer, but its also a rhombus
Step-by-step explanation:
assuming a is 1, regardless, graph would always be square, which is a rhombus. hope square is correct :)
Answer:
1.
2. 
Step-by-step explanation:
1. The area of a hexagon is A = 
Here our a is 4, so plugging in 4 to our equation gives
which simplifies to 
2. The area of an octagon is 
Here our r is 9, so plugging in 9 to our equation gives
which simplifies to 
It would take the second computer 75 seconds because: