Assume the radius of the cylindrical tank to be x and then relate it with its height to find out the value of x.
Curved Surface Area of the cylinder = Perimeter of the base × Height
Do we need to find the area of top and bottom of the pillars for its cleaning?
Use the formula of volume of cylinder and then place the values accordingly.
Total Surface Area = 2πr(h+r)
Try to calculate the volume of the soil so dug out .
Length of rectangle becomes height of cylinder and breadth will become circumference
Volume of cylinder = \\(\\pi r^2h\\)
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