The diameter of a circular well is 4.5m and its depth is 7m .Find the cost of cementing the inner curved surface of the well at the rate of RS 3.50 per m2
Answers
Answered by
0
Answer:
StepGiven that,
Depth of well = 20m
Diameter of well = 7 m
Radius of well = d/2 = 7/2 m
Dimension of rectangular field = 22m × 14m
As we know that Volume of earth dug out from well = πr2h
= 22/7 × 7/2 × 7/2 × 20 = 770 m3
When this earth will spread on rectangular field,
then the Height of platform formed on Rectangular Field = Volume of Earth dug out / Area of Field
= 770/ (22×14) = 2.5m-by-step explanation:
Similar questions