Advertisements
Advertisements
Question
Mark the correct alternative in each of the following:
The number of surfaces of a cone has, is
Options
1
2
3
4
Solution
The surfaces or faces that a cone has are :
(1) Base
(2) Slanted Surface
So, the number of surfaces that a cone has is 2.
APPEARS IN
RELATED QUESTIONS
A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?
`["Assume "pi=22/7]`
Find the area of canvas required for a conical tent of height 24 m and base radius 7 m.
If the radius of the base of a right circular cone is 3r and its height is equal to the radius of the base, then its volume is
The curved surface area of one cone is twice that of the other while the slant height of the latter is twice that of the former. The ratio of their radii is
The slant height of a cone is increased by 10%. If the radius remains the same, the curved surface area is increased by
If a cone is cut into two parts by a horizontal plane passing through the mid-point of its axis, the axis, the ratio of the volumes of upper and lower part is
Volume of a cone is 6280 cubic cm and base radius of the cone is 20 cm. Find its perpendicular height. (π = 3.14)
If the ratio of radius of base and height of a cone is 5:12 and its volume is 314 cubic metre. Find its perpendicular height and slant height. (π = 3.14)
A right triangle with sides 6 cm, 8 cm and 10 cm is revolved about the side 8 cm. Find the volume and the curved surface of the solid so formed.
A semi-circular sheet of metal of diameter 28 cm is bent to form an open conical cup. Find the capacity of the cup.