Plz answere this fast step by step and I will mark u brainlist
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area of trapezium = 1/2 × sum of parallel side × height
area of octagonal surface = abcdefgh
area of trapezium abch+ area of rectangle hcdg+ area of trapezium gdef = 1/2 (5+11) ×4+ (11×5) 1/2(11+5) ×4 m
(32+55+32) =119m
cost will be 119× 25= 2975
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sry I did it wrong
dont mind me
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