A well is dug with 14 m diameter and a depth of 10 m. The earth taken out is spread evenly on a plot of land 100 m long and 7 m wide. Find the height of the platform thus formed by earth.

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Solution

Given: Volume remains same
Volume of cylinder $=$ Volume of cuboid
$(\frac{22}{7}) \times 7^{2} \times 10 = 100 \times 7 \times h h = 2.2 m$

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A well is dug with 14 m diameter and a depth of 10 m. The earth taken out is spread evenly on a plot of land 100 m long and 7 m wide. Find the height of the platform thus formed by earth.

Given: Volume remains sameVolume of cylinder=Volume of cuboid(227)×72×10=100×7×hh=2.2m

Given: Volume remains same
Volume of cylinder $=$ Volume of cuboid
$(\frac{22}{7}) \times 7^{2} \times 10 = 100 \times 7 \times h h = 2.2 m$