A box made of sheet metal costs Rs `6480` at Rs `120` per square metre.If the box is `5m` long and `3m` wide,find its height

Find the cost of leveling a ground at the rate of Rs 12 per square metre if it is 45 m long and 30 m wide

A tank with rectangular base and rectangular sides open at the top is to be constructed so that its depth is 3m and volume is 75m3. If building of tank costs Rs.100 per square metre for the base and Rs.50per square metres for the sides,find the cost of least expensive tank.

The rate for a 1.20 m wide carpet is Rs 40 per metre, find the cost of covering a hall 45 m long and 32 m wide with this carpet. Also, find the cost of carpeting the same hall if the carpet, 80 cm wide, is at Rs 25 per metre.

A closed box (cuboid) with a square base is to have a volume 2000c.c, The material for the top and bottom of the box is to cost Rs 3 per square cm and the material for the sides is to cost Rs 1.50 per square cm. If the cost of the material is to be least find the dimension of the box.

A carpet is 30 m 75 cm long and 80 cm wide. Find its cost at Rs 150 per square metre.

The dimension of a rectangular box are in the ratio 23:4 and the difference between 2 the cost of covering it with sheet of paper at the rate of Rs 4 and Rs4.50 per square metre is Rs 416. Find the dimensions of the box.

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 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.

Find the cost of cultivating a rectangular field 80 m long and 35 m wide at Rs 15 per square metre. Also, find the cost of fencing the field at Rs 24 per metre.