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Total Questions : 2556 | Page 13 of 256 pages
Question 121.  find the surface area of a 10cm*4cm*3cm brick.
  1.    162 cm square
  2.    163 cm square
  3.    164 cm square
  4.    165 cm square
 Discuss Question
Answer: Option C. -> 164 cm square
Explanation :
Question 122.  the sides of a rectangle are in the ratio 4:3 and its area is 972sq.m find the perimeter of rectangle
  1.    124 m
  2.    126 m
  3.    128 m
  4.    130 m
 Discuss Question
Answer: Option B. -> 126 m
Explanation :
Question 123.  a square flowerbed is surrounded by a path 10 cm wide around it. if the area of the path is 2000 cm², find the area of the square flower-bed.
  1.    1000 cm²
  2.    1200 cm²
  3.    1400 cm²
  4.    1600 cm²
 Discuss Question
Answer: Option D. -> 1600 cm²
Explanation :
Question 124.  a rectangular lawn of length 50 m and breadth 35 m is to be surrounded externally by a path which is 2 m wide. find the cost of turfing the path at the rate of $3 per m².
  1.    356 m²
  2.    364 m²
  3.    372 m²
  4.    384 m²
 Discuss Question
Answer: Option A. -> 356 m²
Explanation :
Question 125.  the perimeter of a square courtyard is 144 m. find the cost of cementing it at the rate of $5 per m².
  1.    $ 2376
  2.    $ 5700
  3.    $ 6480
  4.    $ 7490
 Discuss Question
Answer: Option C. -> $ 6480
Explanation :
Question 126.  a painting is painted on a cardboard 19 cm and 14 cm wide, such that there is a margin of 1.5 cm along each of its sides. find the total area of the margin.
  1.    88 cm² 
  2.    89 cm² 
  3.    90 cm² 
  4.    91 cm² 
 Discuss Question
Answer: Option C. -> 90 cm² 
Explanation :
Question 127.  the length of the diagonal of a square is 12 cm. find its area and perimeter.
  1.    31.57 cm
  2.    33.84 cm
  3.    37.28 cm
  4.    41.48 cm
 Discuss Question
Answer: Option B. -> 33.84 cm
Explanation :
Question 128.  the perimeter of a square courtyard is 144 m. find the cost of cementing it at the rate of $5 per m².
  1.    $ 2376
  2.    $ 5700
  3.    $ 6480
  4.    $ 7490
 Discuss Question
Answer: Option C. -> $ 6480
Explanation :
Question 129.  find the area and height of an equilateral triangle of side 12 cm. (√3 = 1.73).
  1.    9.35 cm
  2.    10.38 cm
  3.    14.37 cm
  4.    16.59 cm
 Discuss Question
Answer: Option B. -> 10.38 cm
Explanation :
Question 130.  the base and height of the triangle are in the ratio 3 : 2. if the area of the triangle is 243 cm² find the base and height of the triangle.
  1.    21 cm, 18 cm
  2.    17 cm, 15 cm
  3.    27 cm, 18 cm
  4.    25 cm, 28 cm
 Discuss Question
Answer: Option C. -> 27 cm, 18 cm
Explanation :

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