Answer Posted / amit kumar sachin

Rcc Volume of 2no. Bulb (without pile rcc)
Formula = π/4 {0.4N(D^2-d^2)(D-d)}
Where d=dia of pile
D=dia of under ream(bulb)
N= no of under ream.

Calculation-
Dia of bulb(D)= 2.5 times of dia of pile
D=2.5×0.30 =0.75m
Rcc volume= π/4 {0.4×2×{(.75)^2-(.30)^2}(.75-.30)
= 0.133 m^3

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