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+//the examples are continuously numbered throughout the textbook
+//Example 5_22 page no:313
+clc;
+//given
+len = 12;//in m
+wide = 7.5;//in m
+high = 4.5;//in m
+avg_lumen = 80;//in lumen per square meter
+height = 0.75;//in m
+coeff_uti = 0.3;
+tot_area = len * wide;
+tot_lumen = avg_lumen * tot_area;
+lamp_lumen_req = tot_lumen /coeff_uti;
+//suppose 100 watt lamps are used
+no_of_lamps = lamp_lumen_req / 1340;
+disp(no_of_lamps,"the number of lamps required would be ")
+disp("this can be arranged in 6 rows of 3");
+//suppose 200 watt lamps are used
+no_of_lamps = lamp_lumen_req / 2880;
+disp(no_of_lamps,"the number of lamps required would be ")
+disp("this can be arranged in 3 rows of 3");
+//suppose 80 watt lamps are used
+no_of_lamps = lamp_lumen_req / 2400;
+disp(no_of_lamps,"the number of lamps required would be ")
+disp("this can be arranged in 3 rows of 4");
+tot_energy = 12 * 80;
+disp(tot_energy,"the total energy consumption with the fluorescent lamps is (in W)");
+