If tge angle at the center is 62° and the radius is 12 cm.. find the length of arc​

This is so hard and it’s for a test

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1