109. 11π cm11π cm
111. 3 m
113. 13 cm
115. 350 cm
117. 35°, 35°, 110°35°, 35°, 110°
119. $12,000 at 6%; $18,000 at 8%
121. 8 liters of the 4 12%4 12% and 2 liters of the 12%
123. 8 people
125. 220
127. 36
129. 40