Relate the formula to find the volume of the tent to that of its actual volume given to us and then put all the known values to find the unknown .

In order to find the cloth needed to make the conical tent we need to find its curved surface area as the base of the tent is open .

As the cone is made of a sector shaped metallic sheet so the length of the arc of the given metallic sheet will lie along the circumference of the cone so formed.

We can find the value of radius of the given cone by relating it to that of its circumference and then we can further find the volume using the formula.

Think what more you need to add in curved surface area to get total surface area .

First of all find the radius of the given cone and then put the known values into the formula to work out the volume of the given funnel .

By relating the given volume of the conical vessal to that of the other unknown quantities we can find out the diameter by using inverse operations .

Find the volume of cubical solid and also find the volume of conical solid and then look for how many such conical solids can be made from such cube .

As the plastic funnel was cut along its slant height so in order to find the radius of the sector so formed we need to find the slant height of the cone .

According to the question increase the slant height of the cone by 75 % and then find the ratio between the new curved surface area to that of the old curved surface area .