Find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1:2.

Related Mcqs:

1. Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?

   A. 360 cc
   B. 60 cc
   C. 300 cc
   D. 36 cc

2. The ratio between the radii of two spheres is 1:3. Find the ratio between their volumes?

   A. 27:1
   B. 1:27
   C. 1:9
   D. 9:1

3. The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?

   A. 2 : 5
   B. 1 : 5
   C. 3 : 5
   D. 4 : 5

4. 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

5. Find the ratio between whole surfaces of a sphere and a hemisphere?

   A. 3:4
   B. 4:3
   C. 3:1
   D. 1:3

6. 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

7. 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

8. 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

9. The height of two right circular cones are in the ratio 1:2 and their perimeters of their bases are in the ratio 3:4, the ratio of their volume is_________?

   A. 3:8
   B. 9:16
   C. 9:32
   D. 9:64

10. There are two circles of different radii. The area of a square is 196 sq.cm, whose side is half the radius of the larger circle. The radius of the smaller circle is three-seventh that of the larger circle. What is the circumference of the smaller circle ?

    A. 12 π cm
    B. 16 π cm
    C. 24 π cm
    D. 32 π cm