How many shots of 1cm radius can be prepared from a sphere of 3cm radius?

Related Mcqs:

1. The area of a circle is increased by 22Sq.cm when it’s radius is increased by 1cm. The original radius of the circle is_________?

   A. 6cm
   B. 3.2 cm
   C. 3 cm
   D. 3.5 cm

2. Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be

   A. 4920 cm2
   B. 4727 cm2
   C. 9856 cm2
   D. 19712 cm2

3. The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?

   A. 308 sq cm
   B. 220 sq cm
   C. 440 sq cm
   D. 132 sq cm

4. If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in cm²) is________?

   A. 100π
   B. 7π
   C. 60π
   D. 50π

5. A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?

   A. 45 cm
   B. 18 cm
   C. 90 cm
   D. None of these

6. The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid.

   A. 5 cm
   B. 19 cm
   C. 13 cm
   D. 144 cm

7. If the radius of the sphere is doubled then it’s volume is increased by?

   A. 100 %
   B. 200 %
   C. 700 %
   D. 800 %

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 length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm?

   A. 24.3 m
   B. 243 m
   C. 2430 m
   D. 24300 m

10. The radius of a circular cylinder is the same as that of a sphere. Their volumes are equal. The height of the cylinder is________?

    A. 4/3 times its radius
    B. 2/3 times its radius
    C. Equal to it’s radius
    D. Equal to it’s diameter