Aptitude - Arithmetical Ability

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37.

The cost of the paint is Rs. 36.50 per kg. If 1 kg of paint covers 16 squares feet, how much will it cost to paint outside of a cube having 8 feet each side?                        
A. Rs. 692 B. Rs. 768
C. Rs. 876 D. Rs. 972



38.

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. 3:07 B. 7:03
C. 6:07 D. 7:06



39.

The diagonal of a cube is 6√3 cm. Find its volume and surface area.                        
A. 216cm^3,216cm^2 B. 215cm^3,216cm^2
C. 218cm^3,216cm^2 D. 214cm^3,216cm^2




40.

The dimensions of an open box are 50 cm, 40 cm and 23 cm. Its thickness is 2 cm. If 1 cubic cm of metal used in the box weighs 0.5 gms, find the weight of the box.                        
A. 8.04kg B. 9.04kg
C. 8.24kg D. 8.56kg



41.

The heights of a wall is six times its width and the length of the wall is seven times its height. If volume of the wall be 16128 cu .m, its width is                        
A. 4 m B. 4.5 m
C. 5 m D. 6 m



42.

The heights of two right circular cones are in the ratio 1 : 2 and the perimeters of their bases are in the ratio 3 : 4. Find the ratio of their volumes.                        
A. 1:02 B. 2:04
C. 9:01 D. 9:32



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