The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.

A. 74 π cm²
B. 36 π cm²
C. 48 π cm²
D. 24 π cm²

π * 12 * 4 = 48

Related Mcqs:

A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone then the height of the cylinder is________?
A. 2h
B. 4h
C. 2h/3
D. 3h/2
The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?
A. 12 π cm³
B. 6 π cm³
C. 8 π cm³
D. 10 π cm³
A cylinder and a cone have a same height and same radius of the base. The ratio between the volumes of the cylinder and cone is__________?
A. 1:3
B. 3:1
C. 1:2
D. 2:1
A right cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is_________?
A. 3: 5
B. 2: 5
C. 3: 1
D. 1: 3
What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?
A. 344.35 cm2
B. 344.35 cm2
C. 344.35 cm2
D. None of these
The area of a base of a cone is 30 cm². If the height of the cone is 6cm, find its volume?
A. 120 cm³
B. 40 cm³
C. 50 cm³
D. 60 cm³
The radius of a cylinder is 2 r units and height is 3 r units. Find the curved surface?
A. 18 πr² sq units
B. 3 πr² sq units
C. 12 πr² sq units
D. 6 πr² sq units
The curved surface of a sphere is 64 π cm². Find its radius?
A. 1 cm
B. 2 cm
C. 4 cm
D. 3 cm
The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.
A. 3 : 7
B. 7 : 3
C. 6 : 7
D. 7 : 6
The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places)?
A. 179.29 cm
B. 178.29 cm
C. 179.38 cm
D. 178.39 cm