100 points (:

1) Joshua has a ladder that is 15ft long. He wants to learn the ladder against a vertical wall so that the top of the ladder is 14.8ft above the ground. For safety reasons, he wants the angle the ladder makes with the ground to be no greater than 70 degrees. Will the ladder be safe at this height? Show your work and draw a diagram to support your answer.

2) The ceiling of Katie’s living room is a square that is 20 ft long on each side. To decorate for a party, she plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. Katie can buy rolls that each contain 8 ft of crepe paper. What is the minimum number of rolls she should buy? Show your work.

3) picture above goes with this question!!!
What is the area of triangle BCD to the nearest tenth of a square centimeter? Use special right triangles to help find the height. Show your work.