The diameter of a circle is 9 ft. Find its area to the nearest hundredth

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Which expression converts 45 degree to radians

Explain why the factor 1.5 is broke. into two numbers in the model.