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Recent questions tagged mensuration

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1 answer
1
Consider a cylinder of height $h$ cms and radius $r=\frac{2}{\pi}$ cms as shown in the figure (not drawn to scale). A string of a certain length, when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of $n$ turns (in other words, the string s length is ... , not drawn to scale). How is $h$ related to $n?$ $h=\sqrt{2}n$ $h=\sqrt{17}n$ $h=n$ $h=\sqrt{13}n$
asked Mar 31 in Quantitative Aptitude Lakshman Patel RJIT 10.7k points 119 744 834 69 views
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2
Consider a cylinder of height $h$ cms and radius $r=\frac{2}{\pi}$ cms as shown in the figure (not drawn to scale). A string of a certain length, when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of $n$ turns (in other words, the string ... see figure, not drawn to scale). The length of the string, in cms, is $\sqrt{2}n$ $\sqrt{12}n$ $n$ $\sqrt{13}n$
asked Mar 31 in Quantitative Aptitude Lakshman Patel RJIT 10.7k points 119 744 834 54 views
1 vote
1 answer
3
A solid right circular cone of height $27$ cm is cut into two pieces along a plane parallel to its base at a height of $18$ cm from the base. If the difference in volume of the two pieces is $225$ cc, the volume, in cc, of the original cone is $232$ $256$ $264$ $243$
asked Sep 16, 2021 in Quantitative Aptitude soujanyareddy13 2.7k points 5 88 353 112 views
1 vote
1 answer
4
A man makes complete use of $405$ cc of iron, $783$ cc of aluminium, and $351$ cc of copper to make a number of solid right circular cylinders of each type of metal. These cylinders have the same volume and each of these has radius $3$ cm. If the total number of cylinders is to be ... , then the total surface area of all these cylinders, in sq cm, is $8464\pi$ $928\pi$ $1044(4+\pi)$ $1026(1+\pi)$
asked Mar 20, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 237 views
2 votes
1 answer
5
The base of a regular pyramid is a square and each of the other four sides is an equilateral triangle, length of each side being $20$ cm. The vertical height of the pyramid, in cm, is $8\sqrt{3}$ $12$ $5\sqrt{5}$ $10\sqrt{2}$
asked Mar 20, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 142 views
2 votes
1 answer
6
A right circular cone, of height $12$ ft, stands on its base which has diameter $8$ ft. The tip of the cone is cut off with a plane which is parallel to the base and $9$ ft from the base. With $\pi = 22/7$, the volume, in cubic ft, of the remaining part of the cone is ________
asked Mar 20, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 164 views
1 vote
1 answer
7
A solid metallic cube is melted to form five solid cubes whose volumes are in the ratio $1: 1:8: 27: 27$. The percentage by which the sum of the surface areas of these five cubes exceeds the surface area of the original cube is nearest to $10$ $50$ $60$ $20$
asked Mar 13, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 123 views
1 vote
1 answer
8
A ball of diameter $4$ cm is kept on top of a hollow cylinder standing vertically. The height of the cylinder is $3$ cm, while its volume is $9\pi \;\text{cm}^{3}$. Then the vertical distance, in cm, of the topmost point of the ball from the base of the cylinder is $5$ $4$ $3$ $6$
asked Mar 13, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 129 views
0 votes
0 answers
9
A cube of side $12\; \text{cm}$ is painted red on all the faces and then cut into smaller cubes, each of side $3 \text{cm}$. What is the total number of smaller cubes having none of their faces painted _________
asked Mar 11, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 146 views
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0 answers
10
A wooden box (open at the top) of thickness $0.5\:\text{cm}$, length $21\:\text{cm}$, width $11\:\text{cm}$ and height $6\:\text{cm}$ is painted on the inside. The expenses of painting are Rs. $70$. What is the rate of painting per square centimetres? $\text{Re}\;0.7$ $\text{Re}\;0.5$ $\text{Re}\;0.1$ $\text{Re}\;0.2$
asked Mar 11, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 150 views
0 votes
0 answers
11
A wooden box (open at the top) of thickness $0.5$ cm, length $21$ cm, width $11$ cm and height $6$ cm is painted on the inside. The expenses of painting are $\text{Rs. 70}$. What is the rate of painting per square centimeters? $\text{Re 0.7}$ $\text{Re 0.5}$ $\text{Re 0.1}$ $\text{Re 0.2}$
asked Mar 9, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 75 views
2 votes
1 answer
12
If the rectangular faces of a brick have their diagonals in the ratio $3:2\sqrt{3}:\sqrt{15}$, then the ratio of the length of the shortest edge of the brick to that of its longest edge is $\sqrt{3}:2$ $2:\sqrt{5}$ $1:\sqrt{3}$ $\sqrt{2}:\sqrt{3}$
asked Mar 8, 2020 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 151 views
0 votes
0 answers
13
A cuboidal aquarium, of base dimensions $100\;\text{cm} \times 80\;\text{cm}$ and height $60\;\text{cm}$, is filled with water to its brim. The aquarium is now tilted along one of the $80\;\text{cm}$ edges and the water begin to spill. The tilting is continued ... tilted. Now the box is returned to its original position. By how many centimeters has the height of water reduced? $50$ $40$ $20$ $10$
asked Mar 6, 2020 in Quantitative Aptitude admin 2.4k points 87 175 237 351 views
0 votes
0 answers
14
A solid sphere of radius $12$ inches and cast into a right circular cone whose base diameter is $\sqrt{2}$times its slant height. If the radius of the sphere and the cone are the same, how many such cones can be made and how much material is left out? $4$ and $1$ cubic inch $3$ and $12$ cubic inches $4$ and $0$ cubic inch $3$ and $6$ cubic inches
asked Mar 5, 2020 in Quantitative Aptitude Chandanachandu 308 points 7 61 66 186 views
0 votes
0 answers
15
Consider a cylinder of height h cms and radius $r=\frac{2}{\pi}$ cms as shown in the figure (not drawn to scale). A string of a certain length, when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of n turns (in other words, ... between two consecutive turns? $\frac{h}{n}$ $\frac{h}{\sqrt{n}}$ $\frac{h}{n^2}$ Cannot be determined with given information
asked May 4, 2016 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 394 views
0 votes
0 answers
16
Two full tanks, one shaped like a cylinder and the other like a cone, contain jet fuel. The cylindrical tank holds $500$ litres more than the conical tank. After $200$ litres of fuel has been pumped out from each tank the cylindrical tank contains twice the amount of fuel in the conical tank. How many litres of fuel did the cylindrical tank have when it was full? $700$ $1000$ $1100$ $1200$
asked Mar 30, 2016 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 296 views
0 votes
0 answers
17
There are $8436$ steel balls, each with a radius of $1$ centimeter, stacked in a pile, with $1$ ball on top, $3$ balls in second layer, $6$ in the third layer, $10$ in the fourth, and so on. The number of horizontal layers in the pile is $34$ $38$ $36$ $32$
asked Feb 9, 2016 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 207 views
0 votes
0 answers
18
Let A and B two solid spheres such that the surface area of B is $300\%$ higher than the surface area of A. The volume of area is found to be $k\%$ lower than the volume of B. The value of $k$ must be ________ $85.5$ $92.5$ $90.5$ $87.5$
asked Feb 5, 2016 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 213 views
0 votes
0 answers
19
A lead cuboid of $8$ inches in length, $11$ inches in breadth, and $2$ inches thick was melted and resolidified into the form of a rod of $8$ inches diameter. The length of such a rod, in inches, is nearest to $3$ $3.5$ $4$ $4.5$
asked Jan 17, 2016 in Quantitative Aptitude makhdoom ghaya 7.9k points 236 900 1073 170 views
0 votes
0 answers
20
Three identical cones with base radius $r$ are placed on their bases so that each is touching the other two. The radius of the circle drawn through their vertices is smaller than $r$. equal to $r$. larger than $r$. depends on the height of the cones.
asked Jan 16, 2016 in Quantitative Aptitude makhdoom ghaya 7.9k points 236 900 1073 292 views
0 votes
2 answers
21
If the lengths of diagonals DF, AG and CE of the cube shown in the adjoining figure are equal to the three sides of a triangle, then the radius of the circle circumscribing that triangle will be equal to the sides of the cube $\sqrt{3}$ times the sides of the cube $\frac{1} {\sqrt{3} }$ times the sides of the cube impossible to find from the given information
asked Jan 14, 2016 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 848 views
0 votes
1 answer
22
The length, breadth and height of a room are in the ration $3:2:1.$ If the breadth and height are halved while the length is doubled, then the total area of the four walls of the room will remain the same. decrease by $13.64\%$ decrease by $15\%$ decrease by $18.75\%$ decrease by $30\%$
asked Dec 28, 2015 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 173 views
0 votes
0 answers
23
Consider a right circular cone of base radius $4$ cm and height $10$ cm. A cylinder is to be placed inside the cone with one of the flat surfaces resting on the base of the cone. Find the largest possible total surface area (in sq cm) of the cylinder. $\frac{100 \pi}{3}$ $\frac{80 \pi}{3}$ $\frac{120 \pi}{7}$ $\frac{130 \pi}{9}$ $\frac{110 \pi}{7}$
asked Nov 28, 2015 in Quantitative Aptitude go_editor 13.3k points 309 2254 2467 381 views
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