tell me the area of the octagon surface please guys
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area of the octagon surface can be divide by area of rectangle and area of 2 trapezium ,
thus,
area of rectangle = l×b
=26×8
=208cm²
area of a trapezium =1/2×h(sum of parallel sides)
parallel sides =26,16 (26-10)
area=1/2×5(26+16)
=1/2×5×42
=5×21
=105cm²
area of the second trapezium =105cm²
total area=105+105+208
=418cm²
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