The total area of wisconsin is 65498 square miles. of that about 80% is land area. about how many of wisconsin is not land area

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?

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)