Question

top surface of a raised platform is in the shape of a regular octagon as shown in the figure 14.2 will find the area of enclosed by octagonal figure

Answer 1

AREA enclosed by the OCTAGON
= AREA OF ABCH + DEFG + CDGH
= [1/2(5+11)4] + [1/2(5+11)4] + (5x11)
= 32 + 32 + 55
= 119m²

AREA OF TRAPEZIUM
= 1/2(sum of parallel sides)(altitude)

Answer 2

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