to compare the effictuvebess of two treatmnts reswarchers conducted a well design expiermnet usimg a radnomized block design in which the subjrcts were blcokef by age grouo (under 40 years and 40 years or older. ) which of the follwing must be true about the randomized block design of the expierment

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