A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. Its is opened at the top. Ignoring the thickness of the plastic sheet: determine
the area of the sheet requried for making the box.

A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, determine: (i) The area of the sheet required for making the box. (ii) The cost of sheet for it, if a sheet measuring 1m^2 costs Rs 20.

A wooden box 1.5 m long, 1.25 m wide and 65 cm deep and open at the top is to be made. Find the cost of wood required for it, if Rs 30 is the cost of 1 metre square of wood.

An oil funnel made of tin sheet consists of a cylindrical portion 10 cm long attached to a frustum of a cone. If the total height is 22 cm, diameter of the cylindrical portion is 8 cm and the diameter of the top of the funnel is 18 cm, find the area of the tin sheet required to make the funnel.

An open metal bucket is in the shape of a frustum of a cone, mounted on a hollow cylindrical base made of the same metallic sheet (see Fig. 13.23). The diameters of die two circular ends of the bucket are 45 cm and 25 cm, the total vertical height of the bucket is 40 cm and that of the cylindrical base is 6 cm. Find the area of the metallic sheet used to make the bucket, where we do not take into account the handle of the bucket. Also, Find the volume of water the bucket can hold. (Take pi=22/7 ).

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.

A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold ? (1 m^3 = 1000 l ).

A verandah 1 m wide is constructed all along the outside of a room 5 m long and 4 m wide.Find : the area of the Verandah