Geometry Math Homework Help?

The area of a regular octagon is 45 cm squared. What is the area of the regular octagon with sides four times as large as the sides of the first octagon? a) 655 cm squared b) 720 cm squared <-- the answer c) 180 cm squared d) 8100 cm squared. The area of a regular octagon is 50 m squared. What is the... show more The area of a regular octagon is 45 cm squared. What is the area of the regular octagon with sides four times as large as the sides of the first octagon?
a) 655 cm squared
b) 720 cm squared <-- the answer
c) 180 cm squared
d) 8100 cm squared.


The area of a regular octagon is 50 m squared. What is the area of a regular octagon with sides five times as large as the sides of the first octagon?
a) 1250 cm squared <-- the answer.
b) 1185 cm squared
c) 12500 cm squared
d) 250 cm squared

^^ I need help on HOW to solve the problem. I've already got the answer, though. Thank you!
2 answers 2