Cost related problems in which cost is given in Rs per square metre

cost related problems in which cost is given in Rs per metre

The volume of a closed square based rectangular box is 1000 cubic metre. The cost of constructing the base is 15 paise per square metre and the cost of constructing the top is 25 paise per square metre. The cost of constructing its sides is 20 paise per square metre and the cost of constructing the box is Rs. 3.Find the dimensions of box for minimum cost of construction.

The volume of a closed square based rectangular box is 1000 cubic metre. The cost of constructing the base is 15 paise per square metre and the cost of constructing the top is 25 paise per square metre. The cost of constructing its sides is 20 paise per square metre and the cost of constructing the box is Rs. 3.Find the dimensions of box for minimum cost of construction.

A rectangular garden is 175 m long and 96 m broad . Find the cost of fencing it at Rs.17.50 per metre .Also ,find the cost of ploughing it at Rs. 4.50 paise per square metre.

A dome of a building is in the form of a hemishphere. From inside, it was white- washed at the cost of Rs 498.96. If the cost of white - washing is Rs 2.00 per square metre, find the inside surface area of the dome.

A done of a building is in the form of a hemishphere. From inside, it was white- washed at the cost of Rs 498.96. If the cost of white - washing is Rs 2.00 per square metre, find the volume of the air inside the dome.

The cost of cultivating a rectangular field at Rs 35 per square metre is Rs 71400. if the width of the field is 40m, find its length. Also, find the cost of fencing the field at Rs 50 per metre.

the ratio of the length to breadth of a lawn is 3:5.It costs Rs.3200/- to fence it at rate of Rs.2/- a metre.What would be the cost of developing the lawn at the rate of Rs.10/- per square metre.