A rectangular field is 112 m long and 62 m broad. A cubical tank of edge 6 m is dug at each of the four corners of the field and the earth so removed is evenly spread on the remaining field. Find the rise in level.

11.7 c m

approx.

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13.7 c m

approx.

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10.7 c m

approx.

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12.7 c m

approx.

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Solution

The correct option is D $12.7 c m$ approx.
Volume of soil removed will be equal to volume raised
$4 \times (6)^{3} = (112 \times 62 - 4 \times 6 \times 6) h ⟹ h = 12.7$ cm approx

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A rectangular field is 112 m long and 62 m broad. A cubical tank of edge 6 m is dug at each of the four corners of the field and the earth so removed is evenly spread on the remaining field. Find the rise in level.

The correct option is D 12.7cm approx.Volume of soil removed will be equal to volume raised4×(6)3=(112×62−4×6×6)h⟹h=12.7 cm approx

The correct option is D $12.7 c m$ approx.
Volume of soil removed will be equal to volume raised
$4 \times (6)^{3} = (112 \times 62 - 4 \times 6 \times 6) h ⟹ h = 12.7$ cm approx