Find the arc length. Leave your answer in terms of pie no links

Describe what moves you could use to create the transformation of the original image shown at right

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

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?