3. Fire breaks out with fast growth rate with fire size to be 2MW in a 3m x 4m stall in shopping mall with ceiling height to be 5m, the shopping mall is equipped with smoke detector, each detector can cover 7.5m radius of floor area. Assume the ambient temperature to be 20C, evaluate the following: a. Mean flame height of the fire. b. Mass flow rate of the plume at the ceiling. C. Ceiling jet temperature and velocity when the fire is located at the centre of 4 smoke detectors. d. Estimate the time to for ceiling jet to reach the smoke detector for the above scenario