How many m³ of soil has to be excavated from a rectangular well 28 m deep and whose base dimensions are 10 m and 8 m. Also find the cost of plastering its vertical walls at the rate of Rs 15/m².

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Solution

We have

Thus, the required volume of soil is

Area of the vertical walls =

Thus, the cost of plastering the vertical walls is .

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How many m3 of soil has to be excavated from a rectangular well 28 m deep and whose base dimensions are 10 m and 8 m. Also find the cost of plastering its vertical walls at the rate of Rs 15/m2.

We have Thus, the required volume of soil is Area of the vertical walls = Thus, the cost of plastering the vertical walls is .

How many m³ of soil has to be excavated from a rectangular well 28 m deep and whose base dimensions are 10 m and 8 m. Also find the cost of plastering its vertical walls at the rate of Rs 15/m².

We have

Thus, the required volume of soil is

Area of the vertical walls =

Thus, the cost of plastering the vertical walls is .