ii) a) Find T.S.A of closed cuboids petrol storage tank of dimensions
5m x 4mx3m
b) How much steel was actually used if 1/16 of the steel was wasted in
making the tank?
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Answer:
(a).T.S.A of cuboidal tank=2(lb+bh+hl)
=2(5×4+4×3+3×5)
=2(20+12+15)
=2(47)
=94cm³
(b).Total steel used including waste material=94×1/6
=15.66 unit
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