If 22.5 m of a uniform iron rod weigh 85.5kg. What will be the length of 22.8 kg of the same rod?

A swimming pool is 40m long and 15m wide. Its shallow and deep ends are 1.5 m and 3 m deep respectively. If the bottom of pool slopes uniformly. Find the amount of water in liters required to fill the pool.

The total surface area of a cylinder is 6512cm sq. and the circumference of its base is 88 cm. Find the volume of the cylinder.

Rainfall recorded on a certain day was 5 cm. Find the volume of water that fell on a 2-hectare field.

A cuboidal oil tin is 30 cm by 40 cm by 50 cm. Find the cost of tin required for making 20 such tins if the cost of Tin required @ Rs. 20.