Question 8: The incident heat radiating received by a target is given by: qr Ό,τ 4πR² Qr is the total radiative energy output of the fire (kW) R is the distance from the single-point source to the target (m) and T is the atmospheric transmissivity (0.6) if Q = 48040 ±14000 kW R = 10±2 m Calculate the uncertainty in qr. Explain the steps and what does the result mean?