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A well is dug 20 m Deep and it has diameter of 7m the Earth which is so dug out is spread out on a rectangular plot of 22 M long and 14m wide what is the height of the platform so formed |
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Answer» Answer: 2.5 meters Step-by-step explanation: depth of well= 20 m diameter of well= 7 m ∴r= 3.5 m VOLUME of well = πr²h = 22/7 × 3.5 × 3.5 × 20 = 770 Now, Volume of RECTANGULAR plot = lbh =22 × 14 × h =308 × h According to QUESTION, Volume of rectangular plot = Volume of well ⇒ 308 × h = 770 ⇒ h = 770/308 ⇒ h = 2.5 m |
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