The total surface area of a cone of base radius “r” and slanted height “l” is equal to __________

3. What is the total surface area of a cone of radius 7cm and height 24cm? (Take π =  $\frac{22}{7}$  )

The number of surfaces a cone has

The area of the curved surface of a cone of radius 2r and slant height l/2, is

The slant height of a cone is increased by 10%. If the radius remains the same, the curved surface area is increased by

The slant height and radius of a cone is 30 cm and 14 cm respectively. Total surface area of cone is:

 A tent of conical shape of base radius 28m and slanted height 20m is to be made from a certain material. What is the total cost of clothing material if the rate of material is ₹80/m2? (Take π = $\frac{22}{7}$ )

 A vessel of conical shape of radius 14cm and slanted height 20cm is to be coloured. What is the cost of painting at a rate of ₹2/cm2? (Take π =  $\frac{22}{7}$ )

If the radius of a right circular cone is halved and height is doubled, then the volume will remain unchanged.