Ask your own question, for FREE!
Mathematics 22 Online
OpenStudy (anonymous):

A regular octagon has side length 10.9 in. The perimeter of the octagon is 87.2 in cm and the area is 392.4 in2. A second octagon has side lengths equal to 21.8 in. Find the area of the second octagon. Round to the nearest hundredth. Answer 261.60 in2 1569.60 in2 317.06 in2 142.66 in2 .

OpenStudy (akashdeepdeb):

Use similarity here!

OpenStudy (anonymous):

@Data_LG2

OpenStudy (anonymous):

@AkashdeepDeb is right..

OpenStudy (anonymous):

ok, but how with this

OpenStudy (anonymous):

check this: http://openstudy.com/study#/updates/4febe766e4b0bbec5cfb9d1a

OpenStudy (akashdeepdeb):

A1/A2 = S1^2/S2^2 Get it? :)

OpenStudy (anonymous):

yes i do, so sorry if i ddn't get it the first time

OpenStudy (akashdeepdeb):

Why sorry? [IT IS PERFECTLY ALRIGHT] :)

OpenStudy (anonymous):

okay thanks

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!