Answer:
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Step-by-step explanation:
cos 60 = 1/2
1/2 = 5/zy
1= 10/zy
zy=10
451.675
14.5x35=507.5
507.5x0.89=451.675
27/100×18=4.86
8.4/100×18=1.512
total is 6.372