It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet. How many square metres of the sheet are required for the same ?

A closed cylindrical tank of radius 7m and height 3m is made from a sheet of metal.How much sheet of metal is required?

The capacity of a closed cylindrical vessel of height 1m is 15.4 litres. How many square meters of metal sheet would be needed to make it.

What length of tarpaulin 3 m wide will be required to make conical tent height 8 m and base radius 6 m ? Assume that the extra length of material that will be required for stiching margins and wastage in cutting is approximately 20 cm ("Use"pi=3.14).

A room is 4 m long and 3 m 50 cm wide. How many square metres of carpet is needed to cover the floor of the room?

What length of tarpaulin 3 m wide will be required to make conical tent of heith 8 m and base radius 6m? Assume that the extra length of material that will be required for stitching margins and wastage in cutting ios approximately 20 cm. (Use pi = 3.14 )

An oil funnel made of tin sheet consists of a 10 cm long cylindrical portion 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 (see Fig ).

Find (i) The total surface area of a closed cylindrical petrol storage tank whose diameter 4.2 m. and height 4.5 m.

A cloth 5 m wide is used to make a conical tent of base diameter 14 m and height 24m. Find the cost of cloth at the rate Rs 25 per metre.