AS much as needed

Dimensions of cylindrical overhead tank are, radius = 6m and height = 7m. If it is to be painted to save it from corrosion, how much area needs to be painted?

The adjoining figure shows the measures of a Joker's cap. How much cloth is needed to make such a cap ?

Name the process through which much needed oxygen is supplied to all the cells of body ?

Write the following examples using fractions : To make 5 shirts of the same size, 11 metres of cloth is needed. How much cloth is needed for one shirt?

If 16 shirts of equal size can be made out of 24m of cloth, how much cloth is needed for making one shirt?

Pick out from the following list the two minerals which are not needed by the majority of plants but very much needed by almost all animals : Calcium, Sodium, Potassium, Iron, Iodine.

For making 16 shirts, 44 metres of cloth is needed. How much cloth is required for each shirt ?

in 30litres of a solution 90% is alcohol then how much water needs to b added to make it 80%.