What is the volume of a 6m deep tank having rectangular shaped top 6m×4m and bottom 4m×2m (compound the use ofprismoidal formula)?
A
96m3
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B
94m3
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C
92m3
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D
90m3
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Solution
The correct option is C92m3 Prismoidal formula is also known as simpson's rule for volumes.
Given, 2L=6m:L=3m A1=6×4=24m2 A2=4×2=8m2 Am=(6+42)×(4+22)=15m2 V=L3(A+4Am+A2) =24+(4×15)+8=92m3