a social worker has dug a well 10 m deep and 14 m in diameter.the earth ramen out is spread evenly on a plot of land 100 m long and 7m wide.find the height of the platform this formed by earth.with explaination
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area of cylinder = π r²h
area of cuboid = lbh
πr²h = 3.14 × (14/2 )² × 10= 1538.6
lbh =100×7 ×h
1538.6 = 700 h
Hence h = 2.198
area of cuboid = lbh
πr²h = 3.14 × (14/2 )² × 10= 1538.6
lbh =100×7 ×h
1538.6 = 700 h
Hence h = 2.198
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First find the volume of the earth dug out = ×22/7 × 7×7 × 10
=220×7 = 1540
Now it is spread somewhere so its volume will be equal to that plot.
100×7×h = 1540
h = 2.2 m answer.
=220×7 = 1540
Now it is spread somewhere so its volume will be equal to that plot.
100×7×h = 1540
h = 2.2 m answer.
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