How many cubic meters of earth must be dug out to sink a well which is 20m deep and has a diameter of 7m. If the earth so dug out is spread out over a rectangular pot 14m 11m what will be the height of the platform so formed?
Answers
Answer:
Diameter of the well = 7 m
Radius of the well = 7/2 m
Depth of the well = 20 m
Volume of the mud dug from the well = πr2h
= 22/7 × 7/2 × 7/2 × 20
= 770 m3
Area of the rectangular plot where the mud is spread = 22 x 14
Let the height of the plotfarm be h metres.
Volume of the plot form = Volume of the mud taken from the well
22 x 14 x h = 770
h = 770 / 22x14
h = 2.5 m
Step-by-step explanation:
Diameter of the well = 7 m
Radius of the well = 7/2 m
Depth of the well = 20 m
Volume of the mud dug from the well = πr2h
= 22/7 × 7/2 × 7/2 × 20
= 770 m3
Area of the rectangular plot where the mud is spread = 22 x 14
Let the height of the plotfarm be h metres.
Volume of the plot form = Volume of the mud taken from the well
22 x 14 x h = 770
h = 770 / 22x14
h = 2.5 m
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