Once in wonderland, there was a party. All the folks of wonderland came, it happen every year! The party was held above the wacky tacky building. They put long stairs to go up. Also they made a slide to go down. The slope of the slide had a angle of 20 ( degrees) and the plane was 8ft. The key has to find out how safe the slide is. Using the tangent ratio. What is the height of the building?