& The following figure shows
that cross section of a concrete
structure with the measurements as given. Calculate the area of the cross-section.
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7
Answer:
area = 4.5m
Step-by-step explanation:
area = area of BCD+ area of ABHG+ area of FHDE
= 1/2×0.9×3.6 + 0.9×2.4 + 0.6×1.6
= 4.5m
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first find the area of rectangle by the formula lenght *breath then merg the rectangle with trapezium and find the area of trapezium by the formula 1/2(sum of ll sides) *height and at the last add both tha area and it's done
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