James wants to cover a floor measuring 90cm by 20cm with square tiles of the same size. Given that he uses only whole tiles, find; a) The largest possible length of the side of each tile? b) The number of tiles that are needed to cover the floor?

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