a) 5 cm b) 10 cm c) 15 cm d) 20 cm Answer: d Explanation: Let the height of ...
View QuestionHow many lead shots each 3 mm in diameter can be made from a cuboid of dimensions 9 cm × 11 cm × 12 cm ?
How many lead shots each 3 mm in diameter can be made from a cuboid of dimensions 9 ...
View QuestionFor a sphere of radius 10 cm, What percent of the numerical value of its volume would be the numerical value of the surface area ?
a) 24% b) 26.5% c) 30% d) 45% Answer: c Explanation: Volume of the sphere : $$ = \left[ {\frac{4}{3}\pi ...
View QuestionFind the number of coins 1.5 cm in diameter and 0.2 cm thick, to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm.
a) 430 b) 440 c) 450 d) 460 Answer: c Explanation: Volume one coin : $$\eqalign{ & = \left( ...
View QuestionThe radii of the bases of two cylinders are in the ratio 3 : 4 and their height are in the ratio 4 : 3. The ratio of their volume is :
a) 2 : 3 b) 3 : 2 c) 3 : 4 d) 4 : 3 Answer: c Explanation: ...
View QuestionFind the cost of a cylinder of radius 14 m and height 3.5 m when the cost of its metal is Rs. 50 per cubic meter :
a) Rs. 100208 b) Rs. 107800 c) Rs. 10800 d) Rs. 109800 Answer: b Explanation: Volume : $$\eqalign{ & ...
View QuestionA covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and the thickness of wood is 2.5 cm. Find the volume of the wood :
a) 81000 cu.cm b) 81775 cu.cm c) 82125 cu.cm d) None of these Answer: c Explanation: ...
View QuestionA cuboidal water tank contains 216 litres of water. Its depth is 1/3 of its length and breadth is 1/2 of 1/3 of the difference between length and depth. The length of the tank is :
A cuboidal water tank contains 216 litres of water. Its depth is $$\frac{1}{3}$$ of its length and breadth ...
View QuestionIf the diameter of a sphere is 6 m, its hemisphere will have a volume of :
a) $$18\pi $$ m3 b) $$36\pi $$ m3 c) $$72\pi $$ m3 d) None of these Answer: a Explanation: ...
View QuestionThe volume of a right circular cone which is obtained from a wooden cube of edge 4.2 dm wasting minimum amount of wood is :
a) 19404 dm b) 194.04 dm c) 19.404 dm d) 1940.4 dm Answer: c Explanation: The volume of ...
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