8) A roller coaster climbs vertically 60metres at an angle of 30° from the lowest to the highest point of the track. It then plunges over the high point to begin
the 'fun part'. Calculate the length of the track from the top of the hill to the
bottom.

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet