SECTION A [40 marks]
er all the questions in this section. All
questions carry equal marks.
3
Without using Mathematical tables or
0.09 x 1.21
calculator, evaluate:
3.3 x 0.00025
leaving the answer in standard form
(Scientific notation).

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).