Apply the formula and do the calculation correctly you will get the solution .

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 .

First of all find the radius of the given cone and then put the known values into the formula to work out the curved surface area of the given conical tent to calculate the cost of the tent so formed .

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.

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.

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 .

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 .

First of all find the radius of the given cone and then put the known values into the formula to work out the curved surface area of the given conical tent to calculate the cost of the tent so formed .

Do you remember that the volume of a given cone with same height and base radius is 1/3 of that of the volume of cylinder .