A metal box with a square base and vertical sides is to contain 1024 cm3 of water, the material for the top and bottom costs Rs 5 per cm2 and the material for the sides costs Rs 2.50 per cm2. Find the least cost of the box.

The cost of 2 1/3 metres of cloth is Rs. 75 1/4 . Find the cost of cloth per metre.

The dimensions of a rectangular box are inthe ratio of 2:3:4 and the differencebetween the cost of covering it with sheet of paper at the rates of Rs 8 and Rs 9.50 per m2is Rs 1248. Find the dimensions of the box.

The dimensions of a rectangular box are in the ratio 2:3:4 and the difference between the cost of covering it with sheet of paper at the rates of Rs.8 and Rs.9.50 per m^(2) is Rs.1248. Find the dimensions of the box.

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.

A rhombus-shaped sheet with perimerter 40 cm and on e diagonal 12 cm, is painted on both sides at the rate of Rs. 5 per cm^(2) . Find the cost of painting.

Find the cost of fencing a square park of side 250 m at the rate of Rs. 20 per metre.

A tank with rectangular base and rectangular sides,open at the top is to be constructed so that its depth is 2m and volume is 8m3. If building of tank casts Rs.70 per sq.metre for the base and Rs.45 per sq.metre for sides, what is the cost of least expensive tank?

The cost of fencing around a square park at the rate of Rs 12 per metre is Rs 1872, find the length of each side of the park.

A tank with rectangular base and rectangular sides,open at the top is to be constructed so that its depth is 2m and volume is 8m3. If building of tank costs Rs 70 per square metre for the base and Rs 45 per square metre for sides,what is the cost of least expensive tank?

The dimension of a rectangular box are in the ratio 2:3:4 and the difference between the cost of covering it with sheet of paper at the rate of Rs.4 and Rs.4.50 per square metre is Rs.416. Find the dimensions of the box.