If an arc of a circle has a measure of 90 and the length of the arc's chord is 18, what is the circumference of the circle

Which of the following crops is not typically grown in the great plains region? a. corn c. soybeans b. rice d. wheat

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system

In which direction does the moving force of air flow? a-from warm temperatures to cold temperatures b-to areas of high pressure to areas of low pressure c-east to west d-from high elevations to low elevations