Mathematics Mcqs — Test 47
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Question 1
The volumes of two cubes are in the ratio 27: 125, what shall be the ratio of their surface areas?
Question 2
The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?
Question 3
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________?
Question 4
The spherical ball of lead 3 cm in diameter is melted and recast into 3 spherical balls. The diameters of two of these are 1 ½ cm and 2 cm respectively. The diameter of third ball is?
Question 5
The radius of a cylinder is 2 r units and height is 3 r units. Find the curved surface?
Question 6
The diameter of a cylindrical tin is 6cm and height is 5 cm. Find the volume of the cylinder?
Question 7
The volume of a cube is 1728 cc. Find its surface.
Question 8
How many cubes of edge 2 dm can be cut out of a meter cube?
Question 9
The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube?
Question 10
The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?