What is 123 as a percent

How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decimal places.

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).