Lakshya Education MCQs

Question:  what will be the percentage increase in the area of a rectangle if each of its sides are increased by twenty percent?
Options:
A.34% 
B.44% 
C.54% 
D.64% 
Answer: Option B
Explanation :

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Question 1.  the ratio between the length and the breadth of a rectangular playground is 3 : 2. if a jogger is running along the boundary of the ground at a speed of 12 km/hr is able to complete one round in 8 min
  1.    133600 m² 
  2.    143600 m² 
  3.    153600 m² 
  4.    163600 m² 
Answer: Option C
Explanation :
Question 2.  a flooring tile has a shape of a parallelogram whose base is 28 cm and the corresponding height is 20 cm . how many such tiles are required to cover a floor of a area 2800 cm²
  1.    20000 tiles
  2.    30000 tiles
  3.    40000 tiles
  4.    50000 tiles
Answer: Option D
Explanation :
Question 3.  if a solid cylinder has a total surface area 462 sq. cm. & csa is 1/3rd of it so what is the volume of the cylinder?
  1.    527 cm²
  2.    531 cm²
  3.    535 cm²
  4.    539 cm²
Answer: Option D
Explanation :
Question 4.  a cube of edge 5 cm is cut into cubes each of edge 1 cm. the ratio of the total surface area of one of the small cubes to that of the large cube is equal to:
  1.    1:21
  2.    1:25
  3.    1:27
  4.    1:29
Answer: Option B
Explanation :
Question 5.  a cube of edge 5 cm is cut into cubes each of edge 1 cm. the ratio of the total surface area of one of the small cubes to that of the large cube is equal to:
  1.    1:21
  2.    1:25
  3.    1:27
  4.    1:29
Answer: Option B
Explanation :
Question 6.  find the volume of the box,if the areas of the three adjacent faces of a cuboid box are 120 cm², 72 cm² and 60 cm² respectively.
  1.    720 cm³
  2.    620 cm³
  3.    520 cm³
  4.    420 cm³
Answer: Option A
Explanation :

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