The area of a regular octagon is 35 cm². What is the area of a regular octagon with sides three times as long?

5 answers

The new area is 35x9=315cm2
3x increase in side length corresponds to a 9x increase in area
Thankyou so much, and thanks for telling me how to do it. :)
the area of a regular octagon is 35 cm square. what is the area of a regular octagon with sides five times as long?
175 cm