Topics

General Knowledge
General Science
General English
Aptitude
General Computer Science
General Intellingence and Reasoning
Current Affairs
Exams
Elementary Mathematics
English Literature

Six cubes, each with 10 cm are joined end to end in a row. The surface area of resulting cuboid is

A) \( \Large 2600 cm^{2} \)
B) \( \Large 2400 cm^{2} \)
C) \( \Large 1400 cm^{2} \)
D) \( \Large 600 cm^{2} \)

Correct Answer:

A) \( \Large 2600 cm^{2} \)

Description for Correct answer:
Resulting cuboid will have the dimensions

\( \Large 60 cm \times 10 cm \times 10 cm \)

= \( \Large 2\left[ lb + bh + hl \right] \)

= \( \Large 2\left[ 60 \times 10+10 \times 10+10 \times 60 \right] \)

= \( \Large 2\left[ 1300 \right] =\ 2600\ cm^{2} \)

Part of solved Mensuration questions and answers : >> Aptitude >> Mensuration

Comments

Similar Questions

1). If volume of a cube is \( \Large 729 cm^{3} \), then total surface area of the cube is

A). \( \Large 216 cm^{2} \)

B). \( \Large 384 cm^{2} \)

C). \( \Large 486 cm^{2} \)

D). \( \Large 512 cm^{2} \)

2). A plot of land is in the shape of a right angled isosceles triangle. Length of the hypotenuse side is \( \Large 50\sqrt{2} m \). If cost of fencing is Rs. 2 per meter, then cost of fencing the plot is

A). Rs.381

B). Rs.341

C). Rs,391

D). Rs.371

3). A 10m wide lawn is culivated all along the outside of a rectangular plot measuring \( \Large 100 m \times 50 m \). The total area of the lawn is

A). \( \Large 750 m^{2} \)

B). \( \Large 5000 m^{2} \)

C). \( \Large 2800 m^{2} \)

D). \( \Large 3400 m^{2} \)

4). If a circle and a square have same area, then ratio of the side of the square and radius of the circle is

A). \( \Large \sqrt{ \pi } : 1 \)

B). \( \Large 1 : \sqrt{ \pi } \)

C). \( \Large 1 : \pi \)

D). \( \Large \pi : 1 \)

5). Two cones have their heights in the ratio 2 : 3 and radii of their bases in the ratio 3 : 4. The ratio of their volumes is

A). 3 : 6

B). 3 : 8

C). 3 : 7

D). 3 : 5

6). If a right cylinder and a right circular cone have the same radius and same volume, then ratio of the height of the cylinder to that of the cone is

A). 3 : 2

B). 2 : 3

C). 3 : 1

D). 1 : 3

7). If diameter of the base of a right circular cone is 8 cm and its slant height is 35 cm, then area of the curved surface of the cone is

A). \( \Large 440 cm^{2} \)

B). \( \Large 430 cm^{2} \)

C). \( \Large 420 cm^{2} \)

D). \( \Large 400 cm^{2} \)

8). The dimensions of the floor of a rectangular hall are \( \Large 60 m \times 50 m \). The floor of this hall is to be tiled fully with \( \Large 20 cm \times 10 cm \) rectangular tiles without breaking them to smaller size. The number of tiles required is

A). 100000

B). 160000

C). 150000

D). 50000

9). If volume of a sphere is \( \Large \frac{88}{21} \left(14\right)^{3} cm^{3} \), then curved surface of this sphere is

A). \( \Large 2664 cm^{2} \)

B). \( \Large 2446 cm^{2} \)

C). \( \Large 2464 cm^{2} \)

D). \( \Large 2466 cm^{2} \)

10). A solid consists of a rectangular cylinder with an exact fitting right circular cone placed on the top. Height of the cone is h. If total volume of the solid is three times the volume of the cone, then height of the circular cylinder is

A). \( \Large \frac{2h}{9} \)

B). \( \Large \frac{2h}{3} \)

C). \( \Large \frac{3h}{2} \)

D). \( \Large \frac{4h}{3} \)