The area of a regular octagon is 25 cm2. What is the area of a regular octagon with sides four times as large? Can someone explain how to do this? I keep getting 2500 but i was told it's wrong.

Answer 1

the area grows as the square of the linear ratio
sides 4 times as large means area 4^2 = 16 times as large
25*16=400

Too bad you didn't show your work ...