A) 15 cm
B) 20 cm
C) 25 cm
D) 30 cm
Correct Answer: C
Solution :
Area of tank, \[BCDE=10\times 7.5\] \[=75\,{{m}^{2}}\] Area of remaining field \[=125\times 15-75\] \[=1800\,{{m}^{2}}\] Volume of earth dug \[=10\times 7.5\times 6\] \[=450\,{{m}^{3}}\] According to the question, \[1800\times h=450\] \[\Rightarrow \] \[h=\frac{1}{4}m=\frac{1}{4}\times 100\,cm=25\,cm\]You need to login to perform this action.
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