If more than 30 percent of all accidental fires in restaurants are caused by faulty electrical wiring and a restaurant needs 15 fire extinguishers about how many class c fire extinguishers should the restaurant have

How did brunelleschi solve his problem with the dome of the florence cathedral? a. he created an outer support shell. b. he created many layers of support within the dome. c. he created external supports for the dome. d. all of the above