A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is 2 m and volume is 8 m3. 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?

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?

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?

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.

One side of a square plot is 250m, find the cost of levelling it at the rate of Rs.2 per square metre.

Priya used four similar rectangular carpets and a square carpet for the flooring in her study room as shown below. If it cost her Rs. 6 per square metre for the rectangular carpets and Rs. 8 per square metre for the square carpet, how much did she pay in all ?

A rectangular grassy lawn measuring 30m by 28m is to be surrounded externally by a path which is 2m wide.Find the cost of levelling the path at the rate of Rs 5 per square 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 cost of flooring a rectangular room is Rs. 5698. The rate of flooring is Rs. 37 per square metre. If the room is 14 metres long, what is the breadth of the room?

One side of a square field is 179m. Find the cost of raising a lawn on the field at the rate of Rs 1.50 per square metre.