Answer / mashx69

Total area = 47.5*89.5=4251.25 sqft
Convrt it into sqm (1sqft=.0929sqm)
425* .0929=394.5sqm
Let's take 395sqm
Assume depth of slab be 100mm
395*(100/1000) = 39.5cum
DL of slab =2500*39.5=98750kg

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